Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2016

Supplemental Cash Flow Information [Abstract]

Schedule of supplemental cash flow information

	Six Months Ended June 30
(in millions)	2016			2015
Cash (paid) for interest, net of amount capitalized	$	(209.2	)	$	(116.3	)
Cash received (paid) for income taxes, net of (payments) refunds	7.4			(3.0		)
Significant non-cash transactions
Accounts payable related to construction costs	114.0			3.5
Amortization of deferred revenue	12.3			20.7