Postretirement Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Components of net periodic benefit cost:
Service cost	$ 3.7	$ 4.3	$ 11.0	$ 13.3
Interest cost	9.3	14.6	28.2	45.0
Expected return on plan assets	(10.0)	(20.0)	(30.3)	(61.8)
Amortization of prior service credit	0.5	0.8	1.3	2.2
Net periodic benefit cost	18.1	12.2	34.1	247.7
Defined Benefit Plan, Future Amortization of Gain (Loss)	(4.4)	(9.0)	(13.3)	(28.0)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	10.2	3.5	10.6	221.0
Pension Plan, Defined Benefit [Member]
Components of net periodic benefit cost:
Service cost	3.3	3.9	9.9	11.5
Interest cost	6.7	11.4	20.0	35.6
Expected return on plan assets	(7.4)	(15.8)	(22.3)	(49.2)
Amortization of prior service credit	0.4	0.7	1.2	2.1
Net periodic benefit cost	6.6	11.5	19.7	244.0
Defined Benefit Plan, Future Amortization of Gain (Loss)	(3.6)	(7.8)	(10.9)	(24.1)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	0.0	3.5	0.0	219.9
Foreign Pension Plan, Defined Benefit [Member]
Components of net periodic benefit cost:
Service cost	0.4	0.4	1.1	1.8
Interest cost	2.6	3.2	8.2	9.4
Expected return on plan assets	(2.6)	(4.2)	(8.0)	(12.6)
Amortization of prior service credit	0.1	0.1	0.1	0.1
Net periodic benefit cost	11.5	0.7	14.4	3.7
Defined Benefit Plan, Future Amortization of Gain (Loss)	(0.8)	(1.2)	(2.4)	(3.9)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	10.2	0.0	10.6	1.1
Postretirement Benefit Plans [Member]
Components of net periodic benefit cost:
Service cost	0.1	0.1	0.3	0.3
Interest cost	2.7	2.7	8.2	8.1
Expected return on plan assets	(1.6)	(1.8)	(4.9)	(5.3)
Amortization of prior service credit	0.2	0.2	0.7	0.6
Defined Benefit Plan, Amortization of Gains (Losses)	0.0	0.1	0.0	0.1
Net periodic benefit cost	$ 1.4	$ 1.3	$ 4.3	$ 3.8