Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Service cost	$ 2.6	$ 2.4	$ 8.4	$ 7.7
Interest cost	3.5	4.3	11.5	13.0
Expected return on assets	(4.9)	(4.7)	(16.3)	(14.4)
Amortization of transition obligation			0.1	0.1
Amortization of prior service credit	(0.3)	(0.3)	(1.0)	(1.0)
Recognized actuarial losses (gains)	1.2	0.8	3.7	2.4
Settlements	49.0		49.0
Net periodic benefit cost	51.1	2.5	55.4	7.8
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Service cost	2.5	2.3	8.0	7.4
Interest cost	3.4	4.2	11.2	12.7
Expected return on assets	(4.9)	(4.7)	(16.3)	(14.4)
Amortization of transition obligation			0.1	0.1
Amortization of prior service credit	(0.3)	(0.3)	(1.0)	(1.0)
Recognized actuarial losses (gains)	1.6	1.3	4.8	3.6
Settlements	49.0		49.0
Net periodic benefit cost	51.3	2.8	55.8	8.4
Other Retirement Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Service cost	0.1	0.1	0.4	0.3
Interest cost	0.1	0.1	0.3	0.3
Recognized actuarial losses (gains)	(0.4)	(0.5)	(1.1)	(1.2)
Net periodic benefit cost	(0.2)	(0.3)	(0.4)	(0.6)
U.S. Pension Benefit Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Net periodic benefit cost	50.7	2.0	53.8	6.1
International Pension Benefit Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Net periodic benefit cost	0.6	0.8	2.0	2.3
U.S. Other Retirement Benefit Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Net periodic benefit cost	(0.2)	(0.3)	(0.4)	(0.6)
U.S. Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Net periodic benefit cost	50.5	1.7	53.4	5.5
International Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Net periodic benefit cost	$ 0.6	$ 0.8	$ 2.0	$ 2.3