XML 24 R78.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Postretirement Benefits (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined contribution plan expense | $ 35.6 |  | $ 34.2 |  | $ 30.9 |
Contributions to multiemployer plans | 0.4 |  | 0.6 |  | 0.5 |
Reductions of benefit obligations due to negative plan amendments |  |  | 0.2 |  |  |
Change in Benefit Obligations [Roll Forward] |  |  |  |  |  |
Plan amendments |  |  | (0.2) |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at previous December 31 | 898.6 | [1] |  |  |  |
Fair value of plan assets at December 31 | 956.0 | [2] | 898.6 | [1] |  |
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract] |  |  |  |  |  |
Projected benefit obligation | 1,249.3 |  | 1,388.0 |  |  |
Accumulated benefit obligation | 1,249.3 |  | 1,388.0 |  |  |
Fair value of plan assets | 956.0 |  | 898.6 |  |  |
Funded status | 77.00% |  | 65.00% |  |  |
Unfunded, nonqualified pension plan projected and accumulated benefit obligations included in funded status of the Company's pension plans | 37.9 |  | 42.3 |  |  |
Net Actuarial Losses [Abstract] |  |  |  |  |  |
Percentage of benefit obligation or market value of assets, over which actuarial gains and losses are subject to amortization (in hundredths) | 10.00% |  |  |  |  |
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract] |  |  |  |  |  |
Health care cost trend rate for next year | 7.30% |  | 7.50% |  |  |
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) | 4.50% |  | 4.50% |  |  |
Year rate reaches the ultimate trend rate | 2028 |  | 2028 |  |  |
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates [Abstract] |  |  |  |  |  |
Effect on total service and interest cost, increase | 0 |  |  |  |  |
Effect on accumulated postretirement benefit obligation, increase | 0.3 |  |  |  |  |
Effect on total service and interest cost, decrease | 0 |  |  |  |  |
Effect on accumulated postretirement benefit obligation, decrease | (0.3) |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations [Abstract] |  |  |  |  |  |
Total | 100.00% |  | 100.00% |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total | 100.00% |  |  |  |  |
Total pension plan assets | 956.0 | [2] | 898.6 | [1] |  |
Expected Benefit Payments [Abstract] |  |  |  |  |  |
Amortization of prior service costs (credits) for former/inactive employees | 1.3 |  | 1.3 |  |  |
Next fiscal year amortization of prior service costs (credits) for former/inactive employees | 1.3 |  |  |  |  |
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 27.8 | [2] | 102.8 | [1] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 27.8 | [2] | 102.8 | [1] |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 944.0 | [2] | 794.7 | [1] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 944.0 | [2] | 794.7 | [1] |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2] | 0 | [1] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2] | 0 | [1] |  |
Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 971.8 | [2] | 897.5 | [1] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 971.8 | [2] | 897.5 | [1] |  |
Short-term Investments [Member] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations [Abstract] |  |  |  |  |  |
Total | 24.00% |  | 7.00% |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total | 0.00% |  |  |  |  |
Short-term Investments [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2] | 0.1 | [1] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2] | 0.1 | [1] |  |
Short-term Investments [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 237.0 | [2] | 61.9 | [1] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 237.0 | [2] | 61.9 | [1] |  |
Short-term Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2] | 0 | [1] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2] | 0 | [1] |  |
Short-term Investments [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 237.0 | [2] | 62.0 | [1] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 237.0 | [2] | 62.0 | [1] |  |
United States Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations [Abstract] |  |  |  |  |  |
Total | 25.00% |  | 37.00% |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total | 15.00% |  |  |  |  |
United States Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[3] | 0 | [1],[4] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[3] | 0 | [1],[4] |  |
United States Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 243.8 | [2],[3] | 336.7 | [1],[4] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 243.8 | [2],[3] | 336.7 | [1],[4] |  |
United States Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[3] | 0 | [1],[4] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[3] | 0 | [1],[4] |  |
United States Equity Securities [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 243.8 | [2],[3] | 336.7 | [1],[4] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 243.8 | [2],[3] | 336.7 | [1],[4] |  |
International Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations [Abstract] |  |  |  |  |  |
Total | 5.00% |  | 7.00% |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total | 5.00% |  |  |  |  |
International Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[3] | 0 | [1],[4] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[3] | 0 | [1],[4] |  |
International Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 46.8 | [2],[3] | 60.6 | [1],[4] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 46.8 | [2],[3] | 60.6 | [1],[4] |  |
International Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[3] | 0 | [1],[4] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[3] | 0 | [1],[4] |  |
International Equity Securities [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 46.8 | [2],[3] | 60.6 | [1],[4] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 46.8 | [2],[3] | 60.6 | [1],[4] |  |
Fixed Income Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations [Abstract] |  |  |  |  |  |
Total | 46.00% |  | 49.00% |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total | 80.00% |  |  |  |  |
Government Fixed-Income Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 27.8 | [2],[5] | 102.7 | [1],[5] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 27.8 | [2],[5] | 102.7 | [1],[5] |  |
Government Fixed-Income Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 42.4 | [2],[5] | 43.8 | [1],[5] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 42.4 | [2],[5] | 43.8 | [1],[5] |  |
Government Fixed-Income Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[5] | 0 | [1],[5] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[5] | 0 | [1],[5] |  |
Government Fixed-Income Securities [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 70.2 | [2],[5] | 146.5 | [1],[5] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 70.2 | [2],[5] | 146.5 | [1],[5] |  |
Corporate Fixed-Income Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[6] | 0 | [1],[6] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[6] | 0 | [1],[6] |  |
Corporate Fixed-Income Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 157.0 | [2],[6] | 117.5 | [1],[6] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 157.0 | [2],[6] | 117.5 | [1],[6] |  |
Corporate Fixed-Income Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[6] | 0 | [1],[6] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[6] | 0 | [1],[6] |  |
Corporate Fixed-Income Securities [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 157.0 | [2],[6] | 117.5 | [1],[6] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 157.0 | [2],[6] | 117.5 | [1],[6] |  |
Commingled Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[7] | 0 | [1],[7] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[7] | 0 | [1],[7] |  |
Commingled Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 208.0 | [2],[7] | 174.2 | [1],[7] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 208.0 | [2],[7] | 174.2 | [1],[7] |  |
Commingled Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[7] | 0 | [1],[7] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[7] | 0 | [1],[7] |  |
Commingled Funds [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 208.0 | [2],[7] | 174.2 | [1],[7] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 208.0 | [2],[7] | 174.2 | [1],[7] |  |
Other Investments [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[8] |  |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[8] |  |  |  |
Other Investments [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 9.0 | [2],[8] |  |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 9.0 | [2],[8] |  |  |  |
Other Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 0 | [2],[8] |  |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 | [2],[8] |  |  |  |
Other Investments [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | 9.0 | [2],[8] |  |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 9.0 | [2],[8] |  |  |  |
Other Pension Plan Assets [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at December 31 | (15.8) | [2],[9] | 1.1 | [1],[9] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | (15.8) | [2],[9] | 1.1 | [1],[9] |  |
Pension Plans [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Reductions of benefit obligations due to negative plan amendments | 0 |  | 0 |  |  |
Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Service cost | 0.1 |  | 0.2 |  | 1.1 |
Interest cost | 54.0 |  | 57.7 |  | 62.4 |
Expected return on plan assets | (57.0) |  | (55.2) |  | (53.3) |
Amortization of prior service costs (credits) | 0 |  | 0 |  | 0.4 |
Amortization of net actuarial losses | 21.4 |  | 21.9 |  | 21.3 |
Curtailment loss | 0 |  | 0.1 |  | 0.3 |
Net pension and other benefit costs | 18.5 |  | 24.7 |  | 32.2 |
Change in Benefit Obligations [Roll Forward] |  |  |  |  |  |
Benefit obligation at previous December 31 | 1,388.0 |  | 1,319.3 |  |  |
Service cost | 0.1 |  | 0.2 |  | 1.1 |
Interest cost | 54.0 |  | 57.7 |  | 62.4 |
Participant contributions | 0 |  | 0 |  |  |
Actuarial (gains) losses | (116.4) |  | 84.5 |  |  |
Benefit payments | (76.4) |  | (73.7) |  |  |
Plan amendments | 0 |  | 0 |  |  |
Benefit obligation at December 31 | 1,249.3 |  | 1,388.0 |  | 1,319.3 |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at previous December 31 | 898.6 |  | 795.7 |  |  |
Actual return on plan assets | 80.0 |  | 107.6 |  |  |
Employer contributions | 53.8 |  | 69.0 |  |  |
Participant contributions | 0 |  | 0 |  |  |
Benefit payments | (76.4) |  | (73.7) |  |  |
Fair value of plan assets at December 31 | 956.0 |  | 898.6 |  | 795.7 |
Funded status at December 31 | (293.3) |  | (489.4) |  |  |
Amounts Recognized in Consolidated Balance Sheet [Abstract] |  |  |  |  |  |
Accrued expenses | 3.8 |  | 4.0 |  |  |
Postretirement benefit liabilities | 289.5 |  | 485.4 |  |  |
Net amount recognized | 293.3 |  | 489.4 |  |  |
Prior Service Costs (Credits) [Abstract] |  |  |  |  |  |
Beginning balance | 0 |  | 0.1 |  |  |
Prior service credits arising during the period | 0 |  | 0 |  |  |
Amount recognized as component of net benefit costs | 0 |  | (0.1) |  |  |
Ending balance | 0 |  | 0 |  | 0.1 |
Net Actuarial Losses [Abstract] |  |  |  |  |  |
Beginning balance | 602.1 |  | 591.9 |  |  |
Actuarial (gains) losses arising during the period | (139.4) |  | 32.1 |  |  |
Amount recognized as component of net benefit costs | (21.4) |  | (21.9) |  |  |
Ending balance | 441.3 |  | 602.1 |  | 591.9 |
Total | 441.3 |  | 602.1 |  |  |
Estimated pretax prior service (cost) credit in accumulated other comprehensive income (loss) expected to be recognized over the next year | 0 |  |  |  |  |
Estimated pretax net actuarial loss in accumulated other comprehensive income (loss) expected to be recognized over the next year | 15.0 |  |  |  |  |
Defined Benefit Plan, Weighted average assumptions used to determine pension and other postretirement benefit obligations [Abstract] |  |  |  |  |  |
Discount rate | 4.85% |  | 4.00% |  |  |
Rate of compensation increase | 0.00% | [10] | 0.00% | [10] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Discount rate | 4.00% | [11] | 4.50% | [11] |  |
Long-term rate of return on plan assets | 6.50% | [12] | 7.00% | [12] | 7.25% | [12]
Rate of compensation increase | 0.00% | [12] | 0.00% | [12] | 0.00% | [12]
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 956.0 |  | 898.6 |  | 795.7 |
Expected Benefit Payments [Abstract] |  |  |  |  |  |
Company contributions expected to be made in 2014 | 55.8 | [13] |  |  |  |
2014 | 80.6 |  |  |  |  |
2015 | 82.1 |  |  |  |  |
2016 | 83.1 |  |  |  |  |
2017 | 83.8 |  |  |  |  |
2018 | 84.1 |  |  |  |  |
2019-2023 | 419.1 |  |  |  |  |
Defined Benefit Plan Estimated Future Employer Required Contributions In Next Fiscal Year Qualified Plan | 52.0 |  |  |  |  |
Defined Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year Unfunded Plan | 3.8 |  |  |  |  |
Pension Plans [Member] | Minimum [Member] |  |  |  |  |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Discount rate |  |  |  |  | 5.20% | [11]
Pension Plans [Member] | Maximum [Member] |  |  |  |  |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Discount rate |  |  |  |  | 5.30% | [11]
Other Postretirement Benefit Plans [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Reductions of benefit obligations due to negative plan amendments | 0 |  | 0.2 |  |  |
Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Service cost | 0 |  | 0 |  | 0.2 |
Interest cost | 1.9 |  | 2.4 |  | 3.2 |
Expected return on plan assets | 0 |  | 0 |  | 0 |
Amortization of prior service costs (credits) | (5.7) |  | (6.3) |  | (5.2) |
Amortization of net actuarial losses | 1.3 |  | 0.7 |  | 1.0 |
Curtailment loss | 0 |  | 0 |  | 0 |
Net pension and other benefit costs | (2.5) |  | (3.2) |  | (0.8) |
Change in Benefit Obligations [Roll Forward] |  |  |  |  |  |
Benefit obligation at previous December 31 | 58.0 |  | 69.9 |  |  |
Service cost | 0 |  | 0 |  | 0.2 |
Interest cost | 1.9 |  | 2.4 |  | 3.2 |
Participant contributions | 1.1 |  | 1.3 |  |  |
Actuarial (gains) losses | (5.2) |  | (5.5) |  |  |
Benefit payments | (8.1) |  | (9.9) |  |  |
Plan amendments | 0 |  | (0.2) |  |  |
Benefit obligation at December 31 | 47.7 |  | 58.0 |  | 69.9 |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets at previous December 31 | 0 |  | 0 |  |  |
Actual return on plan assets | 0 |  | 0 |  |  |
Employer contributions | 7.0 |  | 8.6 |  |  |
Participant contributions | 1.1 |  | 1.3 |  |  |
Benefit payments | (8.1) |  | (9.9) |  |  |
Fair value of plan assets at December 31 | 0 |  | 0 |  | 0 |
Funded status at December 31 | (47.7) |  | (58.0) |  |  |
Amounts Recognized in Consolidated Balance Sheet [Abstract] |  |  |  |  |  |
Accrued expenses | 5.8 |  | 7.1 |  |  |
Postretirement benefit liabilities | 41.9 |  | 50.9 |  |  |
Net amount recognized | 47.7 |  | 58.0 |  |  |
Prior Service Costs (Credits) [Abstract] |  |  |  |  |  |
Beginning balance | (18.2) |  | (24.3) |  |  |
Prior service credits arising during the period | 0 |  | (0.2) |  |  |
Amount recognized as component of net benefit costs | 5.7 |  | 6.3 |  |  |
Ending balance | (12.5) |  | (18.2) |  | (24.3) |
Net Actuarial Losses [Abstract] |  |  |  |  |  |
Beginning balance | 8.8 |  | 15.0 |  |  |
Actuarial (gains) losses arising during the period | (5.2) |  | (5.5) |  |  |
Amount recognized as component of net benefit costs | (1.3) |  | (0.7) |  |  |
Ending balance | 2.3 |  | 8.8 |  | 15.0 |
Total | (10.2) |  | (9.4) |  |  |
Estimated pretax prior service (cost) credit in accumulated other comprehensive income (loss) expected to be recognized over the next year | 0.8 |  |  |  |  |
Estimated pretax net actuarial loss in accumulated other comprehensive income (loss) expected to be recognized over the next year | 0 |  |  |  |  |
Defined Benefit Plan, Weighted average assumptions used to determine pension and other postretirement benefit obligations [Abstract] |  |  |  |  |  |
Discount rate | 4.40% |  | 3.60% |  |  |
Rate of compensation increase | 0.00% | [10] | 0.00% | [10] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Discount rate | 3.60% | [11] | 4.20% | [11] |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
Total pension plan assets | 0 |  | 0 |  | 0 |
Expected Benefit Payments [Abstract] |  |  |  |  |  |
Company contributions expected to be made in 2014 | 5.8 | [13] |  |  |  |
2014 | 5.8 |  |  |  |  |
2015 | 5.3 |  |  |  |  |
2016 | 4.8 |  |  |  |  |
2017 | 4.4 |  |  |  |  |
2018 | 4.1 |  |  |  |  |
2019-2023 | $ 15.4 |  |  |  |  |
Other Postretirement Benefit Plans [Member] | Minimum [Member] |  |  |  |  |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Discount rate |  |  |  |  | 4.65% | [11]
Other Postretirement Benefit Plans [Member] | Maximum [Member] |  |  |  |  |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Discount rate |  |  |  |  | 4.80% | [11]
[1] | See Note 6 – Fair Value Measurements for a description of levels within the fair value hierarchy. The level in the fair value hierarchy within which the fair value measurement is classified is determined based on the lowest level input that is significant to the fair value measurement in its entirety. A description of the valuation methodologies is provided following these tables. There were no transfers in and/or out of Level 1, Level 2 and Level 3 in 2012.
[2] | See Note 6 – Fair Value Measurements for a description of levels within the fair value hierarchy. The level in the fair value hierarchy within which the fair value measurement is classified is determined based on the lowest level input that is significant to the fair value measurement in its entirety. A description of the valuation methodologies is provided following these tables. There were no transfers in and/or out of Level 1, Level 2 and Level 3 in 2013.
[3] | The equity assets are invested in two indexed funds based on the Russell 3000 Index (U.S.) and the MSCI EAFE Equity Index (International). The Trust did not directly own any of the Company's common stock as of December 31, 2013.
[4] | The equity assets are invested in two indexed funds based on the Russell 3000 Index (U.S.) and the MSCI EAFE Equity Index (International). The Trust did not directly own any of the Company's common stock as of December 31, 2012.
[5] | Government securities are comprised primarily of U.S. Treasury bonds and other government securities.
[6] | Corporate securities consist primarily of investment grade bonds issued by companies in diversified industries.
[7] | This class includes commingled funds that primarily invest in investment grade corporate securities and government-related securities. This class also includes investments in non-agency collateralized mortgage obligation and mortgage-backed securities, futures and options.
[8] | Other investments consist primarily of interest rate swaps.
[9] | This class includes interest receivable and receivables/payables for securities sold/purchased.
[10] | Assumption used in determining pension benefit obligation only. The rate of compensation increase was reduced to 0.00% at December 31, 2008, as a result of the decision to freeze future benefit accruals for those plans where benefits are based on average compensation.
[11] | Range of discount rates in 2011 reflects the remeasurements of pension and postretirement benefit costs during the year due to negative plan amendments and curtailments recognized.
[12] | Assumption used in determining pension benefit cost only.
[13] | The Company currently anticipates contributing approximately $52.0 million to fund the qualified pension plans and approximately $3.8 million to cover benefit payments in the unfunded, nonqualified pension plan in 2014. Company contributions are subject to change based on market conditions or Company discretion.

X
- Details
Name: | bc_DefinedBenefitPlanActualPlanAssetAllocationsAbstract
Namespace Prefix: | bc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation for qualified former or inactive employees. + References No definition available. + Details
Name: | bc_DefinedBenefitPlanAmortizationOfPriorServiceCostCreditFormerInactiveEmployees
Namespace Prefix: | bc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of the prior service cost or credit to be recognized in the next fiscal year in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation for qualified former or inactive employees. + References No definition available. + Details
Name: | bc_DefinedBenefitPlanAmortizationOfPriorServiceCostCreditFormerInactiveEmployeesNextFiscalYear
Namespace Prefix: | bc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The employer's best estimate, as soon as it can be reasonably determined, of required contributions expected to be paid to the unqualified plan during the next fiscal year beginning after the date of the latest statement of financial position. + References No definition available. + Details
Name: | bc_DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYearUnfundedPlan
Namespace Prefix: | bc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The employer's best estimate, as soon as it can be reasonably determined, of required contributions expected to be paid to the qualified plan during the next fiscal year beginning after the date of the latest statement of financial position. + References No definition available. + Details
Name: | bc_DefinedBenefitPlanEstimatedFutureEmployerRequiredContributionsInNextFiscalYearQualifiedPlan
Namespace Prefix: | bc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Element represents the percentage of the greater of the benefit obligation or the market value of assets, over which actuarial gains and losses are amortized over the remaining service period of active plan participants and over the average remaining life expectancy of inactive plan participants. + References No definition available. + Details
Name: | bc_PercentageBenefitObligationMarketValueAssetsActuarialGainsLossesSubjectToAmortization
Namespace Prefix: | bc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of projected benefit obligations and accumulated benefit obligations for the Company's unfunded, nonqualified plan included in funded status of the Company's pension plans. + References No definition available. + Details
Name: | bc_ProjectedAndAccumulatedBenefitObligationsIncludedInFundedStatusOfPlan
Namespace Prefix: | bc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount related to the pretax cost of benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as components of net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Prior Service Cost -URI http://asc.fasb.org/extlink&oid=6521920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Prior Service Cost -URI http://asc.fasb.org/extlink&oid=6521884 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost) -URI http://asc.fasb.org/extlink&oid=6504192 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Actual Return on Plan Assets (Component of Net Periodic Pension Cost) -URI http://asc.fasb.org/extlink&oid=6504226 + Details
Name: | us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Gain or Loss -URI http://asc.fasb.org/extlink&oid=6514294 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Gain or Loss -URI http://asc.fasb.org/extlink&oid=6749293 + Details
Name: | us-gaap_DefinedBenefitPlanActuarialGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of gains or losses recognized in net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetGainLossBeforeTaxAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTaxAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The interest rate used to adjust for the time value of money for the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The interest rate used to adjust for the time value of money. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512013 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition 1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Projected Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6522206 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Postretirement Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503904 + Details
Name: | us-gaap_DefinedBenefitPlanBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Postretirement Benefits -URI http://asc.fasb.org/extlink&oid=6521376 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Benefits -URI http://asc.fasb.org/extlink&oid=6506267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Benefits -URI http://asc.fasb.org/extlink&oid=6506309 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(5) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanBenefitsPaid
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase in the fair value of plan assets from contributions made by the employer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanContributionsByPlanParticipants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Expected Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512136 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Expected Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512171 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Plan assets of a defined benefit plan, as a percentage of projected benefit obligation. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanFundedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919 + Details
Name: | us-gaap_DefinedBenefitPlanFundedStatusOfPlan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanFutureAmortizationOfGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Health Care Cost Trend Rate -URI http://asc.fasb.org/extlink&oid=6514820 + Details
Name: | us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanInterestCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=32704760&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=32704760&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=32704760&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of increase or decrease due to a change in the terms of an existing plan or the initiation of a new plan. A plan amendment may increase or decrease benefits, including those attributed to years of service already rendered. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Plan Amendment -URI http://asc.fasb.org/extlink&oid=6520743 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Plan Amendment -URI http://asc.fasb.org/extlink&oid=6520782 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAmendments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of net gain (loss) recognized in net periodic benefit cost as a result of an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Curtailment -URI http://asc.fasb.org/extlink&oid=6520938 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 + Details
Name: | us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Service Cost (Component of Net Periodic Pension Cost) -URI http://asc.fasb.org/extlink&oid=6525008 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanServiceCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The ultimate trend rate for health care costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Year the ultimate health care cost trend rate is expected to be reached, in CCYY format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanYearThatRateReachesUltimateTrendRate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of contributions made to multiemployer plans by the employer. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450691-114947 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450657-114947 + Details
Name: | us-gaap_MultiemployerPlanPeriodContributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount before tax of cost (credit) of benefit changes attributable to plan participants' prior service resulting from a plan amendment or plan initiation that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e689-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition For a classified balance sheet, the amount recognized in balance sheet as a current liability associated with an underfunded defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Liabilities -URI http://asc.fasb.org/extlink&oid=6509677 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919 + Details
Name: | us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2410-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919 + Details
Name: | us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2410-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919 + Details
Name: | us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant