Pension and Postretirement Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
U.S. Pension
Net periodic benefit costs
Service cost	$ 19.1	$ 16.6	$ 57.3	$ 49.8
Interest cost on benefit obligation	22.8	22.5	68.4	67.5
Expected return on plan assets	(33.2)	(32.1)	(99.5)	(96.3)
Recognition of net actuarial (gain) loss	12.1	5.9	36.4	17.7
Amortization of prior service cost (benefit)	(1.7)	(1.7)	(5.2)	(5.2)
Total expense	19.1	11.2	57.4	33.5
Other Pension Plan Information
Contributions to plan			7.0
Contributions anticipated to be made during the remainder of 2015			1.0
International Pension
Net periodic benefit costs
Service cost	8.2	8.5	25.0	25.1
Interest cost on benefit obligation	10.1	12.2	30.2	37.5
Expected return on plan assets	(14.0)	(13.4)	(41.8)	(41.0)
Recognition of net actuarial (gain) loss	3.9	1.9	11.7	5.6
Amortization of prior service cost (benefit)		0.2	(0.1)	0.4
Settlements/curtailments				0.1
Total expense	8.2	9.4	25.0	27.7
Other Pension Plan Information
Contributions to plan			35.0
Contributions anticipated to be made during the remainder of 2015			10.0
U.S. Postretirement Health Care
Net periodic benefit costs
Service cost	0.9	1.1	2.8	3.2
Interest cost on benefit obligation	2.4	2.7	7.2	8.1
Expected return on plan assets	(0.2)	(0.2)	(0.7)	(0.8)
Recognition of net actuarial (gain) loss	(1.5)	(2.1)	(4.6)	(6.1)
Amortization of prior service cost (benefit)		(0.1)	(0.1)	(0.2)
Total expense	$ 1.6	$ 1.4	4.6	$ 4.2
Other Pension Plan Information
Contributions to plan			12.0
Contributions anticipated to be made during the remainder of 2015			$ 4.0