Supplemental Disclosure of Cash Flow Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash paid during the period for:
Interest (net of amount capitalized)	$ 122.3	$ 137.5
Non-cash adjustments:
Accounts payable and property, plant and equipment	$ 81.0	$ 52.7