Pension and Other Post-Retirement Benefit Plans (Associated Balances Recognized Consolidated Financial Statements) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Company contributions	$ 24.3	$ 33.6
Amounts recognized in balance sheet
Accrued pension and other post-retirement benefits, net of current portion	(230.4)	(236.7)
U.S.
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Accumulated benefit obligation	539.3	552.4
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at January 1	640.6	585.0
Service cost	14.4	13.8	$ 16.5
Interest cost	26.4	29.1	25.8
Actuarial (gain) loss	(35.6)	101.8
Amendments		2.4
Settlements	(4.9)	(63.8)
Benefits paid	(23.8)	(27.7)
Projected benefit obligation at December 31	617.1	640.6	585.0
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at January 1	504.8	576.8
Actual return on plan assets	(20.3)	8.5
Company contributions	7.6	11.0
Settlements	(4.9)	(63.8)
Benefits paid	(23.8)	(27.7)
Fair value of plan assets at December 31	463.4	504.8	576.8
Funded status of the plans (liability) at December 31	(153.7)	(135.8)
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(3.8)	(4.1)
Accrued pension and other post-retirement benefits, net of current portion	(149.9)	(131.7)
Funded status of the plans (liability) at December 31	(153.7)	(135.8)
Pre-tax amounts recognized in accumulated other comprehensive (income) loss:
Unrecognized actuarial (gain) loss	242.0	234.9
Unrecognized prior service (credit) cost	0.1	0.2
Accumulated other comprehensive (income) loss at December 31	242.1	235.1
Plans with underfunded or non-funded projected benefit obligation:
Aggregate projected benefit obligation	617.1	640.6
Aggregate fair value of plan assets	463.4	504.8
Plans with underfunded or non-funded accumulated benefit obligation:
Aggregate accumulated benefit obligation	539.3	552.4
Aggregate fair value of plan assets	463.4	504.8
International
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Accumulated benefit obligation	364.5	406.3
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at January 1	482.5	438.8
Service cost	16.1	16.7	14.7
Interest cost	14.8	18.5	16.1
Actuarial (gain) loss	(36.9)	71.6
Amendments		0.3
Settlements	(0.1)
Foreign currency exchange rate changes	(39.1)	(53.6)
Plan participants’ contributions	2.1	2.4
Benefits paid	(11.5)	(12.2)
Other	0.6
Projected benefit obligation at December 31	428.5	482.5	438.8
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at January 1	386.7	400.8
Actual return on plan assets	(7.5)	13.5
Company contributions	16.2	22.6
Foreign currency exchange rate changes	(30.0)	(40.4)
Settlements	(0.1)
Plan participants’ contributions	2.1	2.4
Benefits paid	(11.5)	(12.2)
Fair value of plan assets at December 31	355.9	386.7	400.8
Funded status of the plans (liability) at December 31	(72.6)	(95.8)
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(0.4)	(0.4)
Accrued pension and other post-retirement benefits, net of current portion	(72.2)	(95.4)
Funded status of the plans (liability) at December 31	(72.6)	(95.8)
Pre-tax amounts recognized in accumulated other comprehensive (income) loss:
Unrecognized actuarial (gain) loss	174.8	187.8
Unrecognized prior service (credit) cost	1.2	1.3
Unrecognized transition asset	(0.1)	(0.2)
Accumulated other comprehensive (income) loss at December 31	175.9	188.9
Plans with underfunded or non-funded projected benefit obligation:
Aggregate projected benefit obligation	428.5	482.5
Aggregate fair value of plan assets	355.9	386.7
Plans with underfunded or non-funded accumulated benefit obligation:
Aggregate accumulated benefit obligation	117.7	145.0
Aggregate fair value of plan assets	90.4	103.1
Other Post-retirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at January 1	10.4	6.7
Service cost		0.1	0.1
Interest cost	0.4	0.3	0.2
Actuarial (gain) loss	(1.2)	4.0
Amendments		(0.1)
Benefits paid	(0.5)	(0.6)
Projected benefit obligation at December 31	9.1	10.4	$ 6.7
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Company contributions	0.5	0.6
Benefits paid	(0.5)	(0.6)
Funded status of the plans (liability) at December 31	(9.1)	(10.4)
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	(8.4)	(9.6)
Funded status of the plans (liability) at December 31	(9.1)	(10.4)
Pre-tax amounts recognized in accumulated other comprehensive (income) loss:
Unrecognized actuarial (gain) loss	(0.2)	1.1
Unrecognized prior service (credit) cost		(0.1)
Accumulated other comprehensive (income) loss at December 31	(0.2)	1.0
Plans with underfunded or non-funded projected benefit obligation:
Aggregate projected benefit obligation	$ 9.1	$ 10.4