Pension Plans and Other Postretirement Benefits (Details 6) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	$ (9.8)	$ (10.2)
Noncurrent liabilities	(833.8)	(739.3)
Total amount recognized	(843.6)	(749.5)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	(39.8)	(47.3)
Noncurrent liabilities	(359.2)	(415.8)
Total amount recognized	$ (399.0)	$ (463.1)