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Postretirement Benefits (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Postretirement Benefits [Abstract] |  |  |  |  |  |
Pension and other postretirement benefit expense | $ 30.9 |  | $ 25.0 |  | $ 24.0 |
Contributions to multiemployer plans | 0.5 |  | 0.3 |  | 0.4 |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, beginning | 740.4 | [1] |  |  |  |
Fair value of plan assets, ending | 795.7 | [2] | 740.4 | [1] |  |
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, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Amortization of prior service costs (credits) for former/inactive employees | 1.3 |  | 1.3 |  |  |
Estimated pretax prior service credit in Accumulated other comprehensive income (loss) expected to be recognized for former/inactive employees | 1.3 |  |  |  |  |
Fair value of plan assets | 795.7 | [2] | 740.4 | [1] |  |
Expected Benefit Payments [Abstract] |  |  |  |  |  |
Company contributions expected to be made in 2012 to the unfunded benefit plans | 4.0 |  |  |  |  |
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract] |  |  |  |  |  |
Projected benefit obligation | 1,319.3 |  | 1,214.2 |  |  |
Accumulated benefit obligation | 1,319.3 |  | 1,214.2 |  |  |
Fair value of plan assets | 795.7 |  | 740.4 |  |  |
Funded status (in hundredths) | 60.00% |  | 61.00% |  |  |
Unfunded, nonqualified pension plan projected and accumulated benefit obligations included in funded status of the Company's pension plans | 43.1 |  | 42.0 |  |  |
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract] |  |  |  |  |  |
Health care cost trend rate for next year (in hundredths) | 7.60% |  | 7.80% |  |  |
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) (in hundredths) | 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 | 0.1 |  |  |  |  |
Effect on total service and interest cost, decrease | (0.1) |  |  |  |  |
Effect on accumulated postretirement benefit obligation, increase | 1.5 |  |  |  |  |
Effect on accumulated postretirement benefit obligation, decrease | (1.3) |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations [Abstract] |  |  |  |  |  |
United States (in hundredths) | 46.00% |  | 54.00% |  |  |
International (in hundredths) | 8.00% |  | 11.00% |  |  |
Fixed-income securities (in hundredths) | 42.00% |  | 33.00% |  |  |
Short-term investments (in hundredths) | 4.00% |  | 2.00% |  |  |
Total (in hundredths) | 100.00% |  | 100.00% |  |  |
Defined Benefit Plan, Assets, Target Allocations [Abstract] |  |  |  |  |  |
United States (in hundredths) | 45.00% |  |  |  |  |
International (in hundredths) | 10.00% |  |  |  |  |
Fixed-income securities (in hundredths) | 45.00% |  |  |  |  |
Short-term investments (in hundredths) | 0.00% |  |  |  |  |
Total (in hundredths) | 100.00% |  |  |  |  |
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 75.7 | [2] | 24.9 | [1] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 75.7 | [2] | 24.9 | [1] |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 724.4 | [2] | 715.7 | [1] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 724.4 | [2] | 715.7 | [1] |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, beginning |  |  | 87.9 |  |  |
Fair value of plan assets, ending | 0 | [2] | 0.9 | [1] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0 | [2] | 0.9 | [1] |  |
Actual Return on Plan Assets [Abstract] |  |  |  |  |  |
Unrealized gains (losses) |  |  | 18.8 |  |  |
Realized gains (losses) |  |  | (21.4) |  |  |
Purchases, sales and settlements |  |  | (84.1) |  |  |
Transfers in/(out) |  |  | (0.3) |  |  |
Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 800.1 | [2] | 741.5 | [1] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 800.1 | [2] | 741.5 | [1] |  |
Short-term Investments [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0.1 | [2] | 0 | [1] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0.1 | [2] | 0 | [1] |  |
Short-term Investments [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 28.8 | [2] | 18.3 | [1] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 28.8 | [2] | 18.3 | [1] |  |
Short-term Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0 | [2] | 0 | [1] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0 | [2] | 0 | [1] |  |
Short-term Investments [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 28.9 | [2] | 18.3 | [1] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 28.9 | [2] | 18.3 | [1] |  |
International Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0 | [2],[3] | 0 | [1],[4] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of 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, ending | 65.4 | [2],[3] | 82.6 | [1],[4] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 65.4 | [2],[3] | 82.6 | [1],[4] |  |
International Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0 | [2],[3] | 0 | [1],[4] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of 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, ending | 65.4 | [2],[3] | 82.6 | [1],[4] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 65.4 | [2],[3] | 82.6 | [1],[4] |  |
US Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0 | [2],[3] | 0.3 | [1],[4] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0 | [2],[3] | 0.3 | [1],[4] |  |
US Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 367.2 | [2],[3] | 393.2 | [1],[4] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 367.2 | [2],[3] | 393.2 | [1],[4] |  |
US Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, beginning |  |  | 2.3 |  |  |
Fair value of plan assets, ending | 0 | [2],[3] | 0 | [1],[4] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0 | [2],[3] | 0 | [1],[4] |  |
Actual Return on Plan Assets [Abstract] |  |  |  |  |  |
Unrealized gains (losses) |  |  | 0.3 |  |  |
Realized gains (losses) |  |  | 0 |  |  |
Purchases, sales and settlements |  |  | (2.3) |  |  |
Transfers in/(out) |  |  | (0.3) |  |  |
US Equity Securities [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 367.2 | [2],[3] | 393.5 | [1],[4] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 367.2 | [2],[3] | 393.5 | [1],[4] |  |
Government debt securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 75.6 | [2],[5] | 24.6 | [1],[6] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 75.6 | [2],[5] | 24.6 | [1],[6] |  |
Government debt securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 38.0 | [2],[5] | 25.2 | [1],[6] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 38.0 | [2],[5] | 25.2 | [1],[6] |  |
Government debt securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0 | [2],[5] | 0 | [1],[6] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0 | [2],[5] | 0 | [1],[6] |  |
Government debt securities [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 113.6 | [2],[5] | 49.8 | [1],[6] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 113.6 | [2],[5] | 49.8 | [1],[6] |  |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0 | [2],[7] | 0 | [1],[7] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0 | [2],[7] | 0 | [1],[7] |  |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 98.5 | [2],[7] | 9.1 | [1],[7] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 98.5 | [2],[7] | 9.1 | [1],[7] |  |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0 | [2],[7] | 0 | [1],[7] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0 | [2],[7] | 0 | [1],[7] |  |
Corporate Debt Securities [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 98.5 | [2],[7] | 9.1 | [1],[7] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 98.5 | [2],[7] | 9.1 | [1],[7] |  |
Commingled Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0 | [2],[8] | 0 | [1],[9] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0 | [2],[8] | 0 | [1],[9] |  |
Commingled Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 126.5 | [2],[8] | 186.7 | [1],[9] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 126.5 | [2],[8] | 186.7 | [1],[9] |  |
Commingled Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 0 | [2],[8] | 0 | [1],[9] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 0 | [2],[8] | 0 | [1],[9] |  |
Commingled Funds [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | 126.5 | [2],[8] | 186.7 | [1],[9] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | 126.5 | [2],[8] | 186.7 | [1],[9] |  |
Real Estate [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending |  |  | 0 | [1],[10] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets |  |  | 0 | [1],[10] |  |
Real Estate [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending |  |  | 0 | [1],[10] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets |  |  | 0 | [1],[10] |  |
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, beginning | 0.9 | [1],[10] | 79.8 |  |  |
Fair value of plan assets, ending |  |  | 0.9 | [1],[10] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets |  |  | 0.9 | [1],[10] |  |
Actual Return on Plan Assets [Abstract] |  |  |  |  |  |
Unrealized gains (losses) |  |  | 8.3 |  |  |
Realized gains (losses) |  |  | (11.2) |  |  |
Purchases, sales and settlements | (0.9) |  | (76.0) |  |  |
Transfers in/(out) |  |  | 0 |  |  |
Real Estate [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending |  |  | 0.9 | [1],[10] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets |  |  | 0.9 | [1],[10] |  |
Other Investments [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending |  |  | 0 | [1],[11] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets |  |  | 0 | [1],[11] |  |
Other Investments [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending |  |  | 0.6 | [1],[11] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets |  |  | 0.6 | [1],[11] |  |
Other Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, beginning |  |  | 5.8 |  |  |
Fair value of plan assets, ending |  |  | 0 | [1],[11] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets |  |  | 0 | [1],[11] |  |
Actual Return on Plan Assets [Abstract] |  |  |  |  |  |
Unrealized gains (losses) |  |  | 10.2 |  |  |
Realized gains (losses) |  |  | (10.2) |  |  |
Purchases, sales and settlements |  |  | (5.8) |  |  |
Transfers in/(out) |  |  | 0 |  |  |
Other Investments [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending |  |  | 0.6 | [1],[11] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets |  |  | 0.6 | [1],[11] |  |
Other Pension Plan Assets [Member] | Fair Value [Member] |  |  |  |  |  |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, ending | (4.4) | [12],[2] | (1.1) | [1],[13] |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Fair value of plan assets | (4.4) | [12],[2] | (1.1) | [1],[13] |  |
Pension Plans [Member] |  |  |  |  |  |
Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Service cost | 1.1 |  | 1.1 |  | 9.2 |
Interest cost | 62.4 |  | 64.8 |  | 66.4 |
Expected return on plan assets | (53.3) |  | (49.5) |  | (49.4) |
Amortization of prior service costs (credits) | 0.4 |  | 0.4 |  | 3.6 |
Amortization of net actuarial loss | 21.3 |  | 22.2 |  | 52.5 |
Curtailment loss | 0.3 |  | 0.1 |  | 12.4 |
Settlement loss | 0 |  | 0 |  | 1.5 |
Net pension and other benefit costs | 32.2 |  | 39.1 |  | 96.2 |
Change in Benefit Obligations [Roll Forward] |  |  |  |  |  |
Benefit obligation, beginning balance | 1,214.2 |  | 1,143.8 |  |  |
Service cost | 1.1 |  | 1.1 |  | 9.2 |
Interest cost | 62.4 |  | 64.8 |  | 66.4 |
Participant contributions | 0 |  | 0 |  |  |
Actuarial (gains) losses | 113.1 |  | 74.8 |  |  |
Benefit payments | (71.5) |  | (70.4) |  |  |
Plan amendments | 0 |  | 0.1 |  |  |
Benefit obligation, ending balance | 1,319.3 |  | 1,214.2 |  | 1,143.8 |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, beginning | 740.4 |  | 682.2 |  |  |
Actual return on plan assets | 47.2 |  | 91.2 |  |  |
Employer contributions | 79.6 |  | 37.4 |  |  |
Participant contributions | 0 |  | 0 |  |  |
Benefit payments | (71.5) |  | (70.4) |  |  |
Fair value of plan assets, ending | 795.7 |  | 740.4 |  | 682.2 |
Funded status, ending | (523.6) |  | (473.8) |  |  |
Amounts Recognized in Consolidated Balance Sheet [Abstract] |  |  |  |  |  |
Accrued expenses | 4.0 |  | 4.1 |  |  |
Postretirement benefit liabilities | 519.6 |  | 469.7 |  |  |
Net amount recognized | 523.6 |  | 473.8 |  |  |
Prior Service Costs (Credits) [Abstract] |  |  |  |  |  |
Beginning balance | 0.8 |  | 1.2 |  |  |
Prior service cost (credit) arising during the period | 0 |  | 0.1 |  |  |
Amount recognized as component of net benefit costs | (0.7) |  | (0.5) |  |  |
Ending balance | 0.1 |  | 0.8 |  | 1.2 |
Net Actuarial Losses [Abstract] |  |  |  |  |  |
Beginning balance | 494.1 |  | 483.2 |  |  |
Actuarial losses arising during the period | 119.1 |  | 33.1 |  |  |
Amount recognized as component of net benefit costs | (21.3) |  | (22.2) |  |  |
Ending balance | 591.9 |  | 494.1 |  |  |
Total | 592.0 |  | 494.9 |  |  |
Estimated pretax net actuarial loss in accumulated other comprehensive income (loss) | 21.9 |  |  |  |  |
Defined Benefit Plan, Weighted average assumptions used to determine pension and other postretirement benefit obligations [Abstract] |  |  |  |  |  |
Discount rate | 4.50% |  | 5.30% |  |  |
Rate of compensation increase | 0.00% |  | 0.00% |  |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Discount rate (in hundredths) |  |  | 5.85% | [14] |  |
Discount rate, lower range (in hundredths) | 5.20% | [14] |  |  | 6.00% | [14]
Discount rate, upper range (in hundredths) | 5.30% | [14] |  |  | 7.65% | [14]
Long-term rate of return on plan assets (in hundredths) | 7.25% | [15] | 7.50% | [15] | 8.00% | [15]
Rate of compensation increase (in hundredths) | 0.00% | [15] | 0.00% | [15] | 0.00% | [15]
Fair value of plan assets | 795.7 |  | 740.4 |  | 682.2 |
Actual Return on Plan Assets [Abstract] |  |  |  |  |  |
Company contributions expected to be made in 2012 | 79.0 | [16] |  |  |  |
Expected Benefit Payments [Abstract] |  |  |  |  |  |
2012 | 76.1 |  |  |  |  |
2013 | 77.9 |  |  |  |  |
2014 | 79.6 |  |  |  |  |
2015 | 80.9 |  |  |  |  |
2016 | 82.0 |  |  |  |  |
2017-2021 | 418.0 |  |  |  |  |
Company contributions expected to be made in 2012 to the qualified pension plans (required and discretionary) | 75.0 |  |  |  |  |
Company contributions expected to be made in 2012 to the unfunded benefit plans | 4.0 |  |  |  |  |
Other Postretirement Benefit Plans [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Reductions on benefit obligations due to negative plan amendments | 6.1 |  | 0.8 |  | 11.9 |
Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Service cost | 0.2 |  | 0.4 |  | 1.1 |
Interest cost | 3.2 |  | 3.9 |  | 4.9 |
Expected return on plan assets | 0 |  | 0 |  | 0 |
Amortization of prior service costs (credits) | (5.2) |  | (3.9) |  | (2.4) |
Amortization of net actuarial loss | 1.0 |  | 0 |  | 0 |
Curtailment loss | 0 |  | 0 |  | 0.7 |
Settlement loss | 0 |  | 0 |  | 0 |
Net pension and other benefit costs | (0.8) |  | 0.4 |  | 4.3 |
Change in Benefit Obligations [Roll Forward] |  |  |  |  |  |
Benefit obligation, beginning balance | 77.8 |  | 76.0 |  |  |
Service cost | 0.2 |  | 0.4 |  | 1.1 |
Interest cost | 3.2 |  | 3.9 |  | 4.9 |
Participant contributions | (1.7) |  | (1.9) |  |  |
Actuarial (gains) losses | 2.8 |  | 6.6 |  |  |
Benefit payments | (9.7) |  | (10.2) |  |  |
Plan amendments | (6.1) |  | (0.8) |  |  |
Benefit obligation, ending balance | 69.9 |  | 77.8 |  | 76.0 |
Change in Plan Assets [Roll Forward] |  |  |  |  |  |
Fair value of plan assets, beginning | 0 |  | 0 |  |  |
Actual return on plan assets | 0 |  | 0 |  |  |
Employer contributions | 8.0 |  | 8.3 |  |  |
Participant contributions | 1.7 |  | 1.9 |  |  |
Benefit payments | (9.7) |  | (10.2) |  |  |
Fair value of plan assets, ending | 0 |  | 0 |  | 0 |
Funded status, ending | (69.9) |  | (77.8) |  |  |
Amounts Recognized in Consolidated Balance Sheet [Abstract] |  |  |  |  |  |
Accrued expenses | 9.2 |  | 10.4 |  |  |
Postretirement benefit liabilities | 60.7 |  | 67.4 |  |  |
Net amount recognized | 69.9 |  | 77.8 |  |  |
Prior Service Costs (Credits) [Abstract] |  |  |  |  |  |
Beginning balance | (23.4) |  | (26.5) |  |  |
Prior service cost (credit) arising during the period | (6.1) |  | (0.8) |  |  |
Amount recognized as component of net benefit costs | 5.2 |  | 3.9 |  |  |
Ending balance | (24.3) |  | (23.4) |  | (26.5) |
Net Actuarial Losses [Abstract] |  |  |  |  |  |
Beginning balance | 13.2 |  | 6.6 |  |  |
Actuarial losses arising during the period | 2.8 |  | 6.6 |  |  |
Amount recognized as component of net benefit costs | (1.0) |  | 0 |  |  |
Ending balance | 15.0 |  | 13.2 |  |  |
Total | (9.3) |  | (10.2) |  |  |
Estimated pretax prior service cost in accumulated other comprehensive income (loss) | 6.2 |  |  |  |  |
Estimated pretax net actuarial loss in accumulated other comprehensive income (loss) | 2.2 |  |  |  |  |
Defined Benefit Plan, Weighted average assumptions used to determine pension and other postretirement benefit obligations [Abstract] |  |  |  |  |  |
Discount rate | 4.20% |  | 4.80% |  |  |
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Discount rate (in hundredths) |  |  | 5.45% | [14] |  |
Discount rate, lower range (in hundredths) | 4.65% | [14] |  |  | 5.50% | [14]
Discount rate, upper range (in hundredths) | 4.80% | [14] |  |  | 7.25% | [14]
Fair value of plan assets | 0 |  | 0 |  | 0 |
Actual Return on Plan Assets [Abstract] |  |  |  |  |  |
Company contributions expected to be made in 2012 | 9.2 | [16] |  |  |  |
Expected Benefit Payments [Abstract] |  |  |  |  |  |
2012 | 9.2 |  |  |  |  |
2013 | 7.9 |  |  |  |  |
2014 | 6.7 |  |  |  |  |
2015 | 6.3 |  |  |  |  |
2016 | 6.0 |  |  |  |  |
2017-2021 | $ 24.1 |  |  |  |  |
[1] | See Note 5 - 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 significant transfers in and/or out of Level 1, Level 2 and Level 3 in 2010.
[2] | See Note 5 - 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 significant transfers in and/or out of Level 1, Level 2 and Level 3 in 2011.
[3] | The majority of 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, 2011.
[4] | Effective June 2010, active equity managers were replaced with a passive equity manager. The majority of 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, 2010.
[5] | Government securities are comprised primarily of U.S. Treasury bonds and other government securities.
[6] | Government securities are comprised primarily of U.S. Treasury bonds and to a lesser extent other government securities.
[7] | Corporate securities consist primarily of investment grade bonds issued by companies in diversified industries.
[8] | 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.
[9] | This class includes commingled funds that primarily invest in government-related securities and investment grade corporate securities. This class also includes nominal investments in non-agency collateralized mortgage obligation and mortgage-backed securities, futures and options.
[10] | This class represents a limited partnership real estate fund with investments in apartments. This fund was fully liquidated in 2011.
[11] | This class includes a small amount of derivatives (interest rate swaps, options and futures).
[12] | This class includes interest receivable and receivables/payables for securities sold/purchased.
[13] | This class includes dividends and interest receivable and receivables or payables for securities sold or purchased.
[14] | Range of discount rates in 2011 and 2009 reflects the remeasurements of pension and postretirement benefit costs during the year due to negative plan amendments and curtailments recognized.
[15] | Assumption used in determining pension benefit cost only.
[16] | The Company currently anticipates contributing approximately $75.0 million to fund the qualified pension plans and approximately $4.0 million to cover benefit payments in the unfunded, nonqualified pension plan in 2012. Company contributions are subject to change based on market conditions or Company discretion.

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- Definition The amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6962843&loc=d3e1928-114920 + Details
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- Definition The amount of the benefits expected to be paid in Year 5. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6962843&loc=d3e1928-114920 + Details
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- Definition The amount of the benefits expected to be paid in Year 4. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6962843&loc=d3e1928-114920 + Details
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- Definition The amount of the benefits expected to be paid in Year 1. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6962843&loc=d3e1928-114920 + Details
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- Definition The amount of the benefits expected to be paid in Year 3. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6962843&loc=d3e1928-114920 + Details
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- Definition The amount of the benefits expected to be paid in Year 2. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6962843&loc=d3e1928-114920 + Details
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- 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 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Expected Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512136 -Topic 715 -SubTopic 30 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Expected Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512171 -Topic 715 -SubTopic 60 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- 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 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=6867990&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: 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=6962843&loc=d3e1928-114920 + Details
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- 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 Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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=6410544&loc=d3e1703-114919 Reference 3: 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=6962843&loc=d3e1928-114920 + Details
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- 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 Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph l -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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 Reference 3: 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=6962843&loc=d3e1928-114920 + Details
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- 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 (a)(2) -URI http://asc.fasb.org/extlink&oid=6962843&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 (h)(2) -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- 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 Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 6 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6930749&loc=d3e4179-114921 Reference 3: 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=6962843&loc=d3e2417-114920 + Details
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- 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 Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 6 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6930749&loc=d3e4179-114921 Reference 3: 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=6962843&loc=d3e2417-114920 + Details
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- 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 Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph C3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6930749&loc=d3e4179-114921 Reference 3: 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=6962843&loc=d3e2417-114920 + Details
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- 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 -Glossary Plan Amendment -URI http://asc.fasb.org/extlink&oid=6520782 -Topic 715 -SubTopic 30 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Amendment -URI http://asc.fasb.org/extlink&oid=6520743 -Topic 715 -SubTopic 60 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: 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=6962843&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- 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 Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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
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- 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 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 6 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: 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=6962843&loc=d3e2417-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: 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=6962843&loc=d3e2410-114920 Reference 7: 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 8: 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 9: 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=6410544&loc=d3e1703-114919 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant