Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Supplemental Cash Flow Information [Abstract]
Cash (paid) for interest, net of amount capitalized	$ (260.7)	$ (150.1)
Cash received (paid) for income taxes, net	11.7	(2.0)
Accounts payable related to construction costs	113.1	179.1
Amortization of deferred revenue	18.5	$ 30.3
Long-term restricted cash	$ 90.2		$ 118.4