Supplemental Cash Flow Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]
Cash paid for interest		$ 74.5	$ 78.1	$ 110.7
Cash paid for income taxes, net of refunds	[1]	231.9	103.9	111.8
Proceeds from Income Tax Refunds		$ 13.0	$ 21.3	$ 15.0

[1] Refunds of $13.0, $21.3 and $15.0 were received for the years ended December 31, 2015, 2014 and 2013, respectively.