Postretirement Benefit Plans - Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Components of net periodic benefit cost:
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	$ 461.8
Foreign Pension Plan [Member]
Components of net periodic benefit cost:
Service cost	2.2	$ 2.4	$ 2.8
Interest cost	12.3	17.7	18.5
Expected return on plan assets	(16.7)	(23.7)	(24.4)
Amortization of prior service credit	0.1	0.1	0.0
Defined Benefit Plan, Amortization of Gains (Losses)	(5.2)	(5.3)	(7.6)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	4.8	0.8	7.2
Net periodic benefit cost from discontinued operations	0.0	0.4	0.4
Net periodic benefit cost	9.1	3.0	12.1
Pension Plan [Member]
Components of net periodic benefit cost:
Service cost	15.4	21.5	35.7
Interest cost	45.6	98.3	116.2
Expected return on plan assets	(62.6)	(152.0)	(207.6)
Amortization of prior service credit	2.8	3.5	4.5
Defined Benefit Plan, Amortization of Gains (Losses)	(31.1)	(55.6)	(109.2)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	456.4	32.7	0.0
Net periodic benefit cost from discontinued operations	0.0	(8.0)	(24.2)
Net periodic benefit cost	488.7	51.6	33.8
Postretirement Benefit Plans [Member]
Components of net periodic benefit cost:
Service cost	0.4	1.3	2.9
Interest cost	10.9	16.7	21.7
Expected return on plan assets	(7.1)	(8.5)	(11.1)
Amortization of prior service credit	0.8	1.0	(0.2)
Defined Benefit Plan, Amortization of Gains (Losses)	(0.1)	0.0	(2.3)
Net periodic benefit cost from discontinued operations	0.0	(3.1)	(6.4)
Net periodic benefit cost	$ 5.1	$ 7.4	$ 9.2