Pensions and Postretirement Benefits (Details 3) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
U.S. Plans [Member]
Aggregate defined benefit plans with accumulated benefit obligation
Aggregate fair value of plan assets	$ 2,641.3	$ 2,574.9
Aggregate projected benefit obligation	3,366.0	3,091.4
Aggregate accumulated benefit obligations	3,181.3	2,942.9
U.K. Plans [Member]
Aggregate defined benefit plans with accumulated benefit obligation
Aggregate fair value of plan assets	0	0
Aggregate projected benefit obligation	1.0	0.1
Aggregate accumulated benefit obligations	0.4	0.1
Other Plans [Member]
Aggregate defined benefit plans with accumulated benefit obligation
Aggregate fair value of plan assets	102.7	9.2
Aggregate projected benefit obligation	185.5	37.8
Aggregate accumulated benefit obligations	$ 158.4	$ 33.9

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.

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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+ Details

- 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+ Details