Pension and Other Benefit Programs (Schedule of Periodic Benefit Costs (Credits) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
U.S. Defined-Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost of benefits earned during the period	$ 2.2	$ 2.2	$ 6.4	$ 8.0
Interest cost on projected benefit obligation	12.1	16.5	37.0	53.4
Expected return on plan assets	(24.7)	(26.2)	(74.3)	(84.4)
Amortization of prior service (credit) cost	0.4	0.4	1.1	1.3
Amortization of net actuarial (gain) loss	4.3	11.4	12.8	36.8
Partial settlement	20.8		20.8
Net periodic pension\postretirement cost (credit)	15.1	4.3	3.8	15.1
Less: Discontinued operations				2.2
Net periodic pension\postretirement cost (credit), continuing operations	15.1	4.3	3.8	12.9
Retiree Health And Life Insurance Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost of benefits earned during the period	0.1	0.1	0.3	0.3
Interest cost on projected benefit obligation	0.7	0.9	2.2	3.7
Amortization of prior service (credit) cost		(0.1)		(0.3)
Amortization of net actuarial (gain) loss	(0.9)	(1.1)	(2.7)	(4.7)
Net periodic pension\postretirement cost (credit)	(0.1)	(0.2)	(0.2)	(1.0)
Less: Discontinued operations				(0.2)
Net periodic pension\postretirement cost (credit), continuing operations	(0.1)	(0.2)	(0.2)	(0.8)
Non-U.S. Defined-Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost of benefits earned during the period	0.5	0.5	1.5	1.6
Interest cost on projected benefit obligation	1.4	1.6	4.0	5.1
Expected return on plan assets	(1.7)	(1.9)	(5.0)	(5.9)
Amortization of prior service (credit) cost		0.1		0.1
Amortization of net actuarial (gain) loss	0.4	0.3	1.0	0.9
Net periodic pension\postretirement cost (credit)	$ 0.6	$ 0.6	$ 1.5	$ 1.8