XML 57 R43.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Pension and Other Postretirement Benefit Plans (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items] |
Estimated Future Benefit Payments [Table Text Block] |
Estimated Future Benefit Payments
| Pension | Postretirement Health and Life
Millions |  |  |
2014 |  | $33.9 |  |  | $7.7 |
2015 |  | $34.9 |  |  | $8.4 |
2016 |  | $35.8 |  |  | $8.8 |
2017 |  | $36.9 |  |  | $9.2 |
2018 |  | $37.8 |  |  | $9.4 |
Years 2019 – 2023 |  | $200.2 |  |  | $50.6 |
Defined Benefit Costs Recorded in Regulatory Long-Term Assets or Liabilities and Accumulated Other Comprehensive Income Expected to be Recognized over Next Fiscal Year [Table Text Block] | The pension and postretirement health and life costs recorded in regulatory long-term assets or liabilities and accumulated other comprehensive income expected to be recognized as a component of net pension and postretirement benefit costs for the year ending December 31, 2014, are as follows:
| Pension | Postretirement Health and Life
Millions |  |
Net Loss |  | $14.2 |  |  | $0.5 |
Prior Service Cost (Credit) | 0.3 |  | (2.5 | )
Total Pension and Postretirement Health and Life Cost (Credit) |  | $14.5 |  | $(2.0)
Weighted-Average Assumptions Used to Determine Benefit Obligation and Net Periodic Benefit Costs [Table Text Block] |
Weighted-Average Assumptions Used to Determine Benefit Obligation
As of December 31 | 2013 | 2012
Discount Rate |  |
Pension | 4.93% | 4.10%
Postretirement Health and Life | 4.96% | 4.13%
Rate of Compensation Increase | 3.7 - 4.3% | 4.3 - 4.6%
Health Care Trend Rates |  |
Trend Rate | 7.25% | 9.25%
Ultimate Trend Rate | 5% | 5%
Year Ultimate Trend Rate Effective | 2020 | 2019
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Costs
Year Ended December 31 | 2013 | 2012 | 2011
Discount Rate | 4.10 - 4.13% | 4.54 - 4.56% | 5.36 - 5.40%
Expected Long-Term Return on Plan Assets (a) |  |  |
Pension | 8.25% | 8.25% | 8.5%
Postretirement Health and Life | 6.6 - 8.25% | 6.6 - 8.25% | 6.8 - 8.5%
Rate of Compensation Increase | 4.3 - 4.6% | 4.3 - 4.6% | 4.3 - 4.6%
(a) | The expected long-term rate of return used to determine net periodic benefit expense for 2014 has been reduced to 8.00 percent.
Plan Asset Allocations, Actual and Target [Table Text Block] |
Actual Plan Asset Allocations
| Pension | Postretirement Health and Life (a)
| 2013 | 2012 | 2013 | 2012
Equity Securities | 52 | % | 54 | % | 63 | % | 56 | %
Debt Securities | 34 | % | 28 | % | 29 | % | 35 | %
Private Equity | 9 | % | 13 | % | 8 | % | 9 | %
Real Estate | 5 | % | 5 | % | — |  | — |
| 100 | % | 100 | % | 100 | % | 100 | %
(a) | Includes VEBAs and irrevocable grantor trusts.
Plan Asset Target Allocations
| Pension | Postretirement Health and Life (a)
Equity Securities | 52 | % | 50 | %
Debt Securities | 30 | % | 30 | %
Private Equity | 9 | % | 10 | %
Real Estate | 9 | % | 10 | %
| 100 | % | 100 | %
(a) | Includes VEBAs and irrevocable grantor trusts.
Recurring Fair Value Measures [Table Text Block] |
| Fair Value as of December 31, 2013
Recurring Fair Value Measures | Level 1 |  | Level 2 |  | Level 3 |  | Total
Millions |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |
Investments |  |  |  |  |  |  |
Available-for-sale Securities – Equity Securities |  | $7.9 |  |  | — |  |  | — |  |  |  | $7.9 |
Available-for-sale Securities – Corporate Debt Securities | — |  |  |  | $9.8 |  |  | — |  |  | 9.8 |
Cash Equivalents | 34.2 |  |  | — |  |  | — |  |  | 34.2 |
Total Fair Value of Assets |  | $42.1 |  |  |  | $9.8 |  |  | — |  |  |  | $51.9 |
Liabilities: |  |  |  |  |  |  |
Deferred Compensation | — |  |  |  | $16.8 |  |  | — |  |  |  | $16.8 |
Derivatives – Interest Rate Swap | — |  |  | 0.6 |  |  | — |  |  | 0.6 |
Total Fair Value of Liabilities | — |  |  |  | $17.4 |  |  | — |  |  |  | $17.4 |
Total Net Fair Value of Assets (Liabilities) |  | $42.1 |  |  | $(7.6) |  | — |  |  |  | $34.5 |
| Fair Value as of December 31, 2012
Recurring Fair Value Measures | Level 1 |  | Level 2 |  | Level 3 |  | Total
Millions |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |
Investments |  |  |  |  |  |  |
Available-for-sale Securities – Equity Securities |  | $18.0 |  |  | — |  |  | — |  |  |  | $18.0 |
Available-for-sale Securities – Corporate Debt Securities | — |  |  |  | $8.8 |  |  | — |  |  | 8.8 |
Cash Equivalents | 20.7 |  |  | — |  |  | — |  |  | 20.7 |
Total Fair Value of Assets |  | $38.7 |  |  |  | $8.8 |  |  | — |  |  |  | $47.5 |
Liabilities: |  |  |  |  |  |  |
Deferred Compensation | — |  |  |  | $14.0 |  |  | — |  |  |  | $14.0 |
Derivatives – Interest Rate Swap | — |  |  | 0.7 |  |  | — |  |  | 0.7 |
Total Fair Value of Liabilities | — |  |  |  | $14.7 |  |  | — |  |  |  | $14.7 |
Total Net Fair Value of Assets (Liabilities) |  | $38.7 |  |  | $(5.9) |  | — |  |  |  | $32.8 |
Pension [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Obligation and Funded Status [Table Text Block] |
Pension Obligation and Funded Status
Year Ended December 31 | 2013 |  | 2012 |
Millions |  |
Accumulated Benefit Obligation |  | $577.6 |  |  | $598.7 |
Change in Benefit Obligation |  |  |  |
Obligation, Beginning of Year |  | $652.1 |  |  | $597.5 |
Service Cost | 9.9 |  | 9.1 |
Interest Cost | 26.0 |  | 26.4 |
Actuarial (Gain) Loss | (49.2 | ) | 38.5 |
Benefits Paid | (33.5 | ) | (30.9 | )
Participant Contributions | 17.5 |  | 11.5 |
Obligation, End of Year |  | $622.8 |  |  | $652.1 |
Change in Plan Assets |  |  |  |
Fair Value, Beginning of Year |  | $460.1 |  |  | $432.4 |
Actual Return on Plan Assets | 56.5 |  | 38.7 |
Employer Contribution (a) | 18.5 |  | 19.9 |
Benefits Paid | (33.5 | ) | (30.9 | )
Fair Value, End of Year |  | $501.6 |  |  | $460.1 |
Funded Status, End of Year | $(121.2) | $(192.0)
Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of: |  |  |  |
Current Liabilities | $(1.1) | $(1.1)
Non-Current Liabilities | $(120.1) | $(190.9)
(a) | Includes participant contributions noted above.
Unrecognized Costs [Table Text Block] | The pension costs that are reported as a component within our Consolidated Balance Sheet, reflected in long-term regulatory assets or liabilities and accumulated other comprehensive income, consist of the following:
Unrecognized Pension Costs
Year Ended December 31 | 2013 |  | 2012 |
Millions |  |
Net Loss |  | $194.9 |  |  | $286.8 |
Prior Service Cost | 0.4 |  | 0.7 |
Total Unrecognized Pension Costs |  | $195.3 |  |  | $287.5 |
Components of Net Periodic Expense [Table Text Block] |
Components of Net Periodic Pension Expense
Year Ended December 31 | 2013 |  | 2012 |  | 2011 |
Millions |  |  |
Service Cost |  | $9.9 |  |  | $9.1 |  |  | $7.6 |
Interest Cost | 26.0 |  | 26.4 |  | 27.4 |
Expected Return on Plan Assets | (35.2 | ) | (35.4 | ) | (34.6 | )
Amortization of Loss | 21.5 |  | 17.5 |  | 12.1 |
Amortization of Prior Service Cost | 0.3 |  | 0.3 |  | 0.3 |
Net Pension Expense |  | $22.5 |  |  | $17.9 |  |  | $12.8 |
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets [Table Text Block] |
Other Changes in Pension Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets
Year Ended December 31 | 2013 |  | 2012 |
Millions |  |
Net (Gain) Loss | $(70.4) |  | $35.2 |
Amortization of Prior Service Cost | (0.3 | ) | (0.3 | )
Amortization of Loss | (21.5 | ) | (17.5 | )
Total Recognized in Other Comprehensive Income and Regulatory Assets | $(92.2) |  | $17.4 |
Information for Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block] |
Information for Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets
Year Ended December 31 | 2013 |  | 2012 |
Millions |  |
Projected Benefit Obligation |  | $622.8 |  |  | $652.1 |
Accumulated Benefit Obligation |  | $577.6 |  |  | $598.7 |
Fair Value of Plan Assets |  | $501.6 |  |  | $460.1 |
Recurring Fair Value Measures [Table Text Block] |
| Fair Value as of December 31, 2012
Recurring Fair Value Measures | Level 1 | Level 2 | Level 3 | Total
Millions |  |  |  |
Assets: |  |  |  |
Equity Securities: |  |  |  |
U.S. Large-cap (a) |  | $43.0 |  |  | $36.0 |  | — |  |  | $79.0 |
U.S. Mid-cap Growth (a) | 18.3 |  | 15.3 |  | — |  | 33.6 |
U.S. Small-cap (a) | 18.3 |  | 15.3 |  | — |  | 33.6 |
International | 50.5 |  | 45.9 |  | — |  | 96.4 |
Debt Securities: |  |  |  |  |  |  |  |
Mutual Funds | 72.5 |  | — |  | — |  | 72.5 |
Fixed Income | 10.4 |  | 50.8 |  | — |  | 61.2 |
Other Types of Investments: |  |  |  |  |  |  |  |
Private Equity Funds | — |  | — |  |  | $58.9 |  | 58.9 |
Real Estate | — |  | — |  | 24.9 |  | 24.9 |
Total Fair Value of Assets |  | $213.0 |  |  | $163.3 |  |  | $83.8 |  |  | $460.1 |
(a) | The underlying investments classified under U.S. Equity Securities consist of money market funds (Level 1) and actively-managed funds (Level 2), which are combined with futures, and settle daily, to achieve the returns of the U.S. Equity Securities Large-cap, Mid-cap Growth, and Small-cap funds. Our exposure with respect to these investments includes both the futures and the underlying investments.
| Fair Value as of December 31, 2013
Recurring Fair Value Measures | Level 1 | Level 2 | Level 3 | Total
Millions |  |  |  |
Assets: |  |  |  |
Equity Securities: |  |  |  |
U.S. Large-cap (a) |  | $20.9 |  |  | $59.3 |  | — |  |  | $80.2 |
U.S. Mid-cap Growth (a) | 9.4 |  | 26.7 |  | — |  | 36.1 |
U.S. Small-cap (a) | 9.9 |  | 28.2 |  | — |  | 38.1 |
International | 61.2 |  | 43.5 |  | — |  | 104.7 |
Debt Securities: |  |  |  |  |  |  |  |
Mutual Funds | 130.1 |  | — |  | — |  | 130.1 |
Fixed Income | — |  | 36.4 |  | — |  | 36.4 |
Cash Equivalents | 2.7 |  | — |  | — |  | 2.7 |
Other Types of Investments: |  |  |  |  |  |  |  |
Private Equity Funds | — |  | — |  |  | $46.8 |  | 46.8 |
Real Estate | — |  | — |  | 26.5 |  | 26.5 |
Total Fair Value of Assets |  | $234.2 |  |  | $194.1 |  |  | $73.3 |  |  | $501.6 |
(a) | The underlying investments classified under U.S. Equity Securities consist of money market funds (Level 1) and actively-managed funds (Level 2), which are combined with futures, and settle daily, to achieve the returns of the U.S. Equity Securities Large-cap, Mid-cap Growth, and Small-cap funds. Our exposure with respect to these investments includes both the futures and the underlying investments.
Recurring Fair Value Measures - Activity in Level 3 [Table Text Block] |
Recurring Fair Value Measures |  |  |
Activity in Level 3 |  | Private Equity Funds | Real Estate
Millions |  |  |
Balance as of December 31, 2011 |  |  | $69.0 |  |  | $21.7 |
Actual Return on Plan Assets |  | (9.7 | ) | 3.4 |
Purchases, sales, and settlements, net |  | (0.4 | ) | (0.2 | )
Balance as of December 31, 2012 |  |  | $58.9 |  |  | $24.9 |
Recurring Fair Value Measures |  |
Activity in Level 3 | Private Equity Funds | Real Estate
Millions |  |
Balance as of December 31, 2012 |  | $58.9 |  |  | $24.9 |
Actual Return on Plan Assets | 2.3 |  | 2.1 |
Purchases, sales, and settlements, net | (14.4 | ) | (0.5 | )
Balance as of December 31, 2013 |  | $46.8 |  |  | $26.5 |
Postretirement Health and Life [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Obligation and Funded Status [Table Text Block] |
Postretirement Health and Life Obligation and Funded Status
Year Ended December 31 | 2013 |  | 2012 |
Millions |  |
Change in Benefit Obligation |  |
Obligation, Beginning of Year |  | $168.8 |  |  | $210.6 |
Service Cost | 3.9 |  | 4.2 |
Interest Cost | 6.8 |  | 9.4 |
Actuarial Gain | (18.8 | ) | (43.2 | )
Participant Contributions | 2.7 |  | 2.6 |
Plan Amendments | — |  | (5.3 | )
Benefits Paid | (9.9 | ) | (9.5 | )
Settlements (a) | (1.6 | ) | — |
Obligation, End of Year |  | $151.9 |  |  | $168.8 |
Change in Plan Assets |  |
Fair Value, Beginning of Year |  | $131.0 |  |  | $121.0 |
Actual Return on Plan Assets | 21.4 |  | 14.3 |
Employer Contribution | 11.7 |  | 2.3 |
Participant Contributions | 2.7 |  | 2.5 |
Benefits Paid | (9.8 | ) | (9.1 | )
Fair Value, End of Year |  | $157.0 |  |  | $131.0 |
Funded Status, End of Year | $5.1 | $(37.8)
Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of: |  |
Non-Current Assets | $19.4 | — |
Current Liabilities | $(0.9) | $(0.8)
Non-Current Liabilities | $(13.4) | $(37.0)
(a) | Result of the exit from a legacy benefit plan.
Unrecognized Costs [Table Text Block] | The postretirement health and life costs that are reported as a component within our Consolidated Balance Sheet, reflected in regulatory long-term assets or liabilities and accumulated other comprehensive income, consist of the following:
Unrecognized Postretirement Health and Life Costs
Year Ended December 31 | 2013 |  | 2012 |
Millions |  |
Net (Gain) Loss | $(9.0) |  | $23.5 |
Prior Service Credit | (10.1 | ) | (13.1 | )
Total Unrecognized Postretirement Health and Life Costs (Credit) | $(19.1) |  | $10.4 |
Components of Net Periodic Expense [Table Text Block] |
Components of Net Periodic Postretirement Health and Life Expense
Year Ended December 31 | 2013 |  | 2012 |  | 2011 |
Millions |  |  |
Service Cost |  | $3.9 |  |  | $4.2 |  |  | $3.8 |
Interest Cost | 6.8 |  | 9.4 |  | 10.8 |
Expected Return on Plan Assets | (9.7 | ) | (9.9 | ) | (9.7 | )
Amortization of Prior Service Credit | (2.5 | ) | (1.7 | ) | (1.7 | )
Amortization of Loss | 1.6 |  | 7.5 |  | 8.5 |
Amortization of Transition Obligation | — |  | 0.1 |  | 0.1 |
Effect of Plan Settlement (a) | (1.6 | ) | — |  | — |
Net Postretirement Health and Life Expense (Credit) | $(1.5) |  | $9.6 |  |  | $11.8 |
(a) | Result of the exit from a legacy benefit plan.
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets [Table Text Block] |
Other Changes in Postretirement Benefit Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets
Year Ended December 31 | 2013 |  | 2012 |
Millions |  |
Net Gain | $(30.2) | $(47.5)
Prior Service Credit Arising During the Period | — |  | (5.3 | )
Amortization of Prior Service Credit | 2.5 |  | 1.7 |
Amortization of Transition Obligation | — |  | (0.1 | )
Amortization of Loss | (1.6 | ) | (7.5 | )
Amount Recognized due to Plan Settlement (a) | (0.2 | ) | — |
Total Recognized in Other Comprehensive Income and Regulatory Assets | $(29.5) | $(58.7)
(a) | Result of the exit from a legacy benefit plan.
Sensitivity of a One-Percentage-Point Change in Health Care Trend Rates [Table Text Block] |
Sensitivity of a One-Percentage-Point Change in Health Care Trend Rates
| One Percent Increase | One Percent Decrease
Millions |  |
Effect on Total of Postretirement Health and Life Service and Interest Cost |  | $1.6 |  | $(1.3)
Effect on Postretirement Health and Life Obligation |  | $16.0 |  | $(13.4)
Recurring Fair Value Measures [Table Text Block] |
| Fair Value as of December 31, 2013
Recurring Fair Value Measures | Level 1 | Level 2 | Level 3 | Total
Millions |  |  |  |
Assets: |  |  |  |
Equity Securities: |  |  |  |
U.S. Large-cap (a) |  | $28.3 |  | — |  | — |  |  | $28.3 |
U.S. Mid-cap Growth (a) | 17.6 |  | — |  | — |  | 17.6 |
U.S. Small-cap (a) | 18.2 |  | — |  | — |  | 18.2 |
International | 33.4 |  | — |  | — |  | 33.4 |
Debt Securities: |  |  |  |  |  |  |  |
Mutual Funds | 30.8 |  | — |  | — |  | 30.8 |
Fixed Income | — |  |  | $15.5 |  | — |  | 15.5 |
Cash Equivalents | 0.1 |  | — |  | — |  | 0.1 |
Other Types of Investments: |  |  |  |  |  |  |  |
Private Equity Funds | — |  | — |  |  | $13.1 |  | 13.1 |
Total Fair Value of Assets |  | $128.4 |  |  | $15.5 |  |  | $13.1 |  |  | $157.0 |
(a) | The underlying investments classified under U.S. Equity Securities consist of mutual funds (Level 1).
| Fair Value as of December 31, 2012
Recurring Fair Value Measures | Level 1 | Level 2 | Level 3 | Total
Millions |  |  |  |
Assets: |  |  |  |
Equity Securities: |  |  |  |
U.S. Large-cap (a) |  | $16.7 |  | — |  | — |  |  | $16.7 |
U.S. Mid-cap Growth (a) | 13.2 |  | — |  | — |  | 13.2 |
U.S. Small-cap (a) | 13.3 |  | — |  | — |  | 13.3 |
International | 30.3 |  | — |  | — |  | 30.3 |
Debt Securities: |  |  |  |  |  |  |  |
Mutual Funds | 25.5 |  | — |  | — |  | 25.5 |
Fixed Income | 0.2 |  |  | $18.3 |  | — |  | 18.5 |
Other Types of Investments: |  |  |  |  |  |  |  |
Private Equity Funds | — |  | — |  |  | $13.5 |  | 13.5 |
Total Fair Value of Assets |  | $99.2 |  |  | $18.3 |  |  | $13.5 |  |  | $131.0 |
(a) | The underlying investments classified under U.S. Equity Securities consist of mutual funds (Level 1).
Recurring Fair Value Measures - Activity in Level 3 [Table Text Block] |
Recurring Fair Value Measures |
Activity in Level 3 | Private Equity Funds
Millions |
Balance as of December 31, 2011 |  | $14.0 |
Actual Return on Plan Assets | 0.2 |
Purchases, sales, and settlements, net | (0.7 | )
Balance as of December 31, 2012 |  | $13.5 |
Recurring Fair Value Measures |
Activity in Level 3 | Private Equity Funds
Millions |
Balance as of December 31, 2012 |  | $13.5 |
Actual Return on Plan Assets | 2.4 |
Purchases, sales, and settlements, net | (2.8 | )
Balance as of December 31, 2013 |  | $13.1 |

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

X
- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of accumulated benefit obligations and fair values of plan assets of pension plans and/or other employee benefit plans where the accumulated benefit obligation exceeds the fair 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 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 + Details
Name: | us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + 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)(5) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income (loss) expected to be recognized as components of net periodic benefit cost over the next fiscal year, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + 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 (s) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on 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 (k) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAssumptionsUsedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in plan assets and benefit obligations recognized in other comprehensive income (loss) during the period. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the effect of a one-percentage-point increase and the 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 and 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_ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + 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_ScheduleOfExpectedBenefitPaymentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
Name: | us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized 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_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of net funded status of pension plans and/or other employee 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=28361610&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetFundedStatusTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + 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 + Details
Name: | us-gaap_ScheduleOfNetPeriodicBenefitCostNotYetRecognizedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration