Postretirement Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Components of net periodic benefit cost:
Service cost	$ 4.3	$ 4.2	$ 13.3	$ 19.7
Interest cost	14.4	22.3	44.8	94.3
Expected return on plan assets	(19.7)	(34.1)	(61.5)	(141.6)
Amortization of prior service credit	0.7	0.8	2.1	2.7
Net periodic benefit cost from discontinued operations			0.0	(7.6)
Net periodic benefit cost	12.2	5.8	247.7	16.9
Defined Benefit Plan, Future Amortization of Gain (Loss)	(9.0)	(12.6)	(28.0)	(48.7)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	(3.5)	0.0	(221.0)	(0.7)
Pension Plan, Defined Benefit [Member]
Components of net periodic benefit cost:
Service cost	3.8	3.6	11.4	17.9
Interest cost	11.4	18.1	35.6	80.1
Expected return on plan assets	(15.7)	(28.7)	(49.1)	(123.1)
Amortization of prior service credit	0.7	0.8	2.1	2.7
Net periodic benefit cost from discontinued operations			0.0	(8.0)
Net periodic benefit cost	11.5	5.1	244.0	13.9
Defined Benefit Plan, Future Amortization of Gain (Loss)	(7.8)	(11.3)	(24.1)	(44.3)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	(3.5)	0.0	(219.9)	0.0
Foreign Pension Plan, Defined Benefit [Member]
Components of net periodic benefit cost:
Service cost	0.5	0.6	1.9	1.8
Interest cost	3.0	4.2	9.2	14.2
Expected return on plan assets	(4.0)	(5.4)	(12.4)	(18.5)
Amortization of prior service credit	0.0	0.0	0.0	0.0
Net periodic benefit cost from discontinued operations			0.0	0.4
Net periodic benefit cost	0.7	0.7	3.7	3.0
Defined Benefit Plan, Future Amortization of Gain (Loss)	(1.2)	(1.3)	(3.9)	(4.4)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	0.0	0.0	(1.1)	(0.7)
Postretirement Benefit Plans [Member]
Components of net periodic benefit cost:
Service cost	0.1	0.2	0.3	1.2
Interest cost	2.7	2.9	8.1	13.8
Expected return on plan assets	(1.7)	(1.4)	(5.3)	(7.1)
Amortization of prior service credit	0.2	0.1	0.6	0.8
Defined Benefit Plan, Amortization of Gains (Losses)	0.0	0.0	0.1	0.0
Net periodic benefit cost from discontinued operations	0.0	0.0	0.0	(3.1)
Net periodic benefit cost	$ 1.3	$ 1.8	$ 3.8	$ 5.6