Pension and Other Retiree Benefits (Pension Benefit Obligation and Funded Status) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in plan assets
Employer contributions		$ 7.1
Amounts recognized in the Consolidated Balance Sheets consist of:
Pension and post-retirement benefit obligations		89.1	$ 100.5
U.S.
Change in projected benefit obligation (PBO)
Projected benefit obligation at beginning of year		212.9	177.4
Service cost		1.6	2.1	$ 2.0
Interest cost		8.7	8.6	7.9
Actuarial (gain) loss		(14.4)	34.2
Participants’ contributions		0.0	0.0
Benefits paid		(10.1)	(9.4)
Plan amendments		0.0	0.0
Foreign exchange rate changes		0.0	0.0
Projected benefit obligation at end of year		198.7	212.9	177.4
Change in plan assets
Fair value of plan assets at beginning of year		163.9	156.3
Actual return on plan assets		(9.3)	10.8
Employer contributions		1.3	6.2
Participants’ contributions		0.0	0.0
Benefits paid		(10.1)	(9.4)
Foreign exchange rate changes		0.0	0.0
Fair value of plan assets at end of year		145.8	163.9	156.3
Funded status (Fair value of plan assets less PBO)		(52.9)	(49.0)
Amounts recognized in the Consolidated Balance Sheets consist of:
Other non-current assets		0.0	0.0
Other current liabilities		0.0	0.0
Pension and post-retirement benefit obligations	[1]	52.9	49.0
Components of accumulated other comprehensive income, net of tax:
Unrecognized actuarial loss (gain)		55.1	51.9
Unrecognized prior service (credit) cost		2.0	2.4
International
Change in projected benefit obligation (PBO)
Projected benefit obligation at beginning of year		391.8	371.4
Service cost		0.9	0.8	1.6
Interest cost		12.9	15.7	14.7
Actuarial (gain) loss		(19.0)	48.3
Participants’ contributions		0.2	0.2
Benefits paid		(15.9)	(16.6)
Plan amendments		0.0	(0.2)
Foreign exchange rate changes		(23.8)	(27.8)
Projected benefit obligation at end of year		347.1	391.8	371.4
Change in plan assets
Fair value of plan assets at beginning of year		351.2	342.8
Actual return on plan assets		(0.8)	43.8
Employer contributions		5.4	5.5
Participants’ contributions		0.2	0.2
Benefits paid		(15.9)	(16.6)
Foreign exchange rate changes		(21.2)	(24.5)
Fair value of plan assets at end of year		318.9	351.2	342.8
Funded status (Fair value of plan assets less PBO)		(28.2)	(40.6)
Amounts recognized in the Consolidated Balance Sheets consist of:
Other non-current assets		0.9	0.0
Other current liabilities		0.4	0.5
Pension and post-retirement benefit obligations	[1]	28.7	40.1
Components of accumulated other comprehensive income, net of tax:
Unrecognized actuarial loss (gain)		75.0	78.1
Unrecognized prior service (credit) cost		(0.3)	(0.4)
Post-retirement
Change in projected benefit obligation (PBO)
Projected benefit obligation at beginning of year		12.2	13.3
Service cost		0.1	0.2	0.2
Interest cost		0.4	0.5	0.6
Actuarial (gain) loss		(3.4)	(0.3)
Participants’ contributions		0.1	0.1
Benefits paid		(0.5)	(0.8)
Plan amendments		(0.2)	(0.4)
Foreign exchange rate changes		(0.6)	(0.4)
Projected benefit obligation at end of year		8.1	12.2	13.3
Change in plan assets
Fair value of plan assets at beginning of year		0.0	0.0
Actual return on plan assets		0.0	0.0
Employer contributions		0.4	0.7
Participants’ contributions		0.1	0.1
Benefits paid		(0.5)	(0.8)
Foreign exchange rate changes		0.0	0.0
Fair value of plan assets at end of year		0.0	0.0	$ 0.0
Funded status (Fair value of plan assets less PBO)		(8.1)	(12.2)
Amounts recognized in the Consolidated Balance Sheets consist of:
Other non-current assets		0.0	0.0
Other current liabilities		0.6	0.8
Pension and post-retirement benefit obligations	[1]	7.5	11.4
Components of accumulated other comprehensive income, net of tax:
Unrecognized actuarial loss (gain)		(4.2)	(1.1)
Unrecognized prior service (credit) cost		$ (0.2)	$ (1.5)

[1] Pension and post-retirement obligations of $89.1 million as of December 31, 2015, decreased from $100.5 million as of December 31, 2014, primarily due to cash contributions.