Employee Benefit Plans Amounts Recognized in the Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent assets	$ 12.9	$ 27.0
Defined benefit pension plan liabilities, current	(5.7)	(4.2)
Defined benefit pension plan, liabilities, noncurrent	(113.5)	(103.1)
Defined benefit plan, amounts recognized in balance sheet	(106.3)	(80.3)
Other Postretirement Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent assets	0.0	0.0
Postemployment benefits liability, current	(29.1)	(29.4)
Other postretirement defined benefit plan, liabilities, noncurrent	(542.6)	(559.0)
Other postretirement defined benefit plan, liabilities	$ (571.7)	$ (588.4)