Pension and Other Post-Retirement Benefit Plans (Associated Balances Recognized Consolidated Financial Statements) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Company contributions	$ 62.7	$ 114.1
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(20.9)	(20.6)
Accrued pension and other post-retirement benefits, net of current portion	(266.5)	(272.4)
U.S.
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	614.1	536.6
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at January 1	597.8	486.9
Service cost	14.6	12.0	11.1
Interest cost	26.9	26.1	25.2
Actuarial (gain) loss	86.5	88.6
Amendments		0.9
Plan participants’ contributions
Benefits paid	(32.9)	(16.7)
Projected benefit obligation at December 31	692.9	597.8	486.9
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Balance at beginning of period	406.0	380.5
Actual return on plan assets	57.5	(10.6)
Company contributions	31.9	52.8
Plan participants’ contributions
Benefits paid	(32.9)	(16.7)
Balance at end of period	462.5	406.0	380.5
Funded status of the plans (liability) at December 31	(230.4)	(191.8)
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(19.1)	(18.8)
Accrued pension and other post-retirement benefits, net of current portion	(211.3)	(173.0)
Funded status of the plans (liability) at December 31	(230.4)	(191.8)
Amounts recognized in accumulated other comprehensive (income) loss:
Unrecognized actuarial (gain) loss	355.0	315.6
Unrecognized prior service (credit) cost	0.1
Accumulated other comprehensive (income) loss at December 31	355.1	315.6
Plans with underfunded or non-funded projected benefit obligation:
Aggregate projected benefit obligation	692.9	597.8
Aggregate fair value of plan assets	462.5	406.0
Plans with underfunded or non-funded accumulated benefit obligation:
Aggregate accumulated benefit obligation	614.1	536.6
Aggregate fair value of plan assets	462.5	406.0
International
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	290.4	326.1
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at January 1	454.5	388.5
Service cost	37.2	29.5	24.9
Interest cost	21.4	20.3	17.9
Actuarial (gain) loss	(1.8)	32.0
Curtailments	(49.0)
Settlements	(108.6)
Foreign currency exchange rate changes	25.9	(8.4)
Plan participants’ contributions	2.0	1.6
Benefits paid	(9.3)	(9.0)
Projected benefit obligation at December 31	372.3	454.5	388.5
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Balance at beginning of period	362.1	321.9
Actual return on plan assets	30.6	(6.0)
Company contributions	30.8	61.3
Foreign currency exchange rate changes	20.3	(7.7)
Settlements	(108.6)
Plan participants’ contributions	2.0	1.6
Benefits paid	(9.3)	(9.0)
Balance at end of period	327.9	362.1	321.9
Funded status of the plans (liability) at December 31	(44.4)	(92.4)
Amounts recognized in balance sheet
Other assets	3.9
Current portion of accrued pension and other post-retirement benefits	(1.1)	(1.0)
Accrued pension and other post-retirement benefits, net of current portion	(47.2)	(91.4)
Funded status of the plans (liability) at December 31	(44.4)	(92.4)
Amounts recognized in accumulated other comprehensive (income) loss:
Unrecognized actuarial (gain) loss	103.3	173.8
Unrecognized prior service (credit) cost	1.0	1.0
Unrecognized transition asset	(0.5)	(0.8)
Accumulated other comprehensive (income) loss at December 31	103.8	174.0
Plans with underfunded or non-funded projected benefit obligation:
Aggregate projected benefit obligation	285.1	454.5
Aggregate fair value of plan assets	236.9	362.2
Plans with underfunded or non-funded accumulated benefit obligation:
Aggregate accumulated benefit obligation	31.3	21.9
Aggregate fair value of plan assets	9.3	6.5
Other Post-retirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at January 1	8.8	8.6
Service cost	0.1	0.1	0.1
Interest cost	0.4	0.4	0.5
Actuarial (gain) loss		0.4
Benefits paid	(0.6)	(0.7)
Projected benefit obligation at December 31	8.7	8.8	8.6
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Balance at beginning of period
Company contributions	0.6	0.7
Benefits paid	(0.6)	(0.7)
Balance at end of period
Funded status of the plans (liability) at December 31	(8.7)	(8.8)
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(0.7)	(0.8)
Accrued pension and other post-retirement benefits, net of current portion	(8.0)	(8.0)
Funded status of the plans (liability) at December 31	(8.7)	(8.8)
Amounts recognized in accumulated other comprehensive (income) loss:
Unrecognized actuarial (gain) loss	(1.7)	(1.9)
Unrecognized prior service (credit) cost	(0.5)	(1.6)
Unrecognized transition asset
Accumulated other comprehensive (income) loss at December 31	(2.2)	(3.5)
Plans with underfunded or non-funded projected benefit obligation:
Aggregate projected benefit obligation	8.7	8.8
Aggregate fair value of plan assets