Pensions and Postretirement Benefits (Details 6) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011
U.S. Plans [Member]
Expected pension benefit payments
Defined benefit plan, Expected future benefit payments in 2012	$ 199.9
Defined benefit plan, Expected future benefit payments in 2013	208.4
Defined benefit plan, Expected future benefit payments in 2014	203.1
Defined benefit plan, Expected future benefit payments in 2015	206.8
Defined benefit plan, Expected future benefit payments in 2016	209.8
Defined benefit plan, Expected future benefit payments in five fiscal years 2017 - 2021	1,138.2
U.K. Plans [Member]
Expected pension benefit payments
Defined benefit plan, Expected future benefit payments in 2012	11.6
Defined benefit plan, Expected future benefit payments in 2013	13.3
Defined benefit plan, Expected future benefit payments in 2014	15.0
Defined benefit plan, Expected future benefit payments in 2015	16.9
Defined benefit plan, Expected future benefit payments in 2016	19.1
Defined benefit plan, Expected future benefit payments in five fiscal years 2017 - 2021	135.9
Other Plans [Member]
Expected pension benefit payments
Defined benefit plan, Expected future benefit payments in 2012	4.3
Defined benefit plan, Expected future benefit payments in 2013	4.9
Defined benefit plan, Expected future benefit payments in 2014	5.4
Defined benefit plan, Expected future benefit payments in 2015	6.8
Defined benefit plan, Expected future benefit payments in 2016	7.9
Defined benefit plan, Expected future benefit payments in five fiscal years 2017 - 2021	$ 50.2