Pensions Benefit Obligation in Excess of Assets (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
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Dec. 31, 2011
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Dec. 31, 2010
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Pension Plans with Projected Benefit Obligations in Excess of Plan Assets [Abstract] | ||
Projected benefit obligation | $ 1,165.6 | $ 945.9 |
Fair value of plan assets | 858.0 | 734.3 |
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract] | ||
Accumulated benefit obligation | 987.9 | 910.5 |
Fair value of plan assets | $ 717.8 | $ 725.6 |
Defined Benefit Plan, Measurement Date | December 31 |
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- Definition
The date(s) used to measure (at least the majority of) plan assets and benefit obligations for defined benefit pension and other postretirement benefit plans. Disclosure required by FAS 132R paragraph 5k prior to being amended by FAS 158. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
If aggregate disclosures are presented, the aggregate benefit obligation for plans with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
If aggregate disclosures are presented, the aggregate fair value of plan assets for plans with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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