Supplemental Disclosure of Cash Flow Information (Details) - USD ($) $ in Millions		3 Months Ended
	Jan. 01, 2019	Mar. 31, 2019	Mar. 31, 2018
Cash paid during the period for:
Interest (net of amount capitalized)		$ 44.0	$ 40.2
Non-cash adjustments:
Accounts payable and property, plant and equipment		40.7	$ 62.1
Right-of-use assets obtained in exchange for lease obligations	$ 18.0	$ 18.0