Employee Benefit Plans (Amounts Recognized in AOCI and Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Changes recognized in other comprehensive income (loss):
Total recognized in other comprehensive income	$ (6.3)	$ (9.7)	$ (6.9)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit)	(0.2)
Defined Benefit Plan, Future Amortization of Gain (Loss)	(8.9)
Amounts recognized in other comprehensive income (loss):
Prior service costs	(0.9)	(1.2)
Actuarial loss	(197.3)	(214.7)
Subtotal	(198.2)	(215.9)
Deferred taxes	71.0	78.7
Net amount recognized	(127.2)	(137.2)
Changes recognized in other comprehensive income (loss):
Current year prior service costs	0.1	0.1
Current year actuarial loss	23.3	(5.0)
Effect of exchange rates	(1.5)	(2.2)
Amortization of prior service (costs) credits	(0.3)	(0.3)
Amortization of actuarial loss	(39.2)	(9.9)
Total recognized in other comprehensive income	(17.6)	(17.3)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	20.1	(6.6)
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit)	2.4
Defined Benefit Plan, Future Amortization of Gain (Loss)	(1.4)
Amounts recognized in other comprehensive income (loss):
Prior service costs	12.0	15.0
Actuarial loss	(16.3)	(18.4)
Subtotal	(4.3)	(3.4)
Deferred taxes	1.6	1.3
Net amount recognized	(2.7)	(2.1)
Changes recognized in other comprehensive income (loss):
Current year prior service costs	0.0	0.0
Current year actuarial loss	(0.7)	0.1
Effect of exchange rates	0.0	0.0
Amortization of prior service (costs) credits	3.1	3.1
Amortization of actuarial loss	(1.4)	(1.5)
Total recognized in other comprehensive income	1.0	1.7
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ (0.5)	$ 0.3