SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 230.4	$ 128.6	$ 126.6
Charged to Costs and Expenses	(231.5)	2.8	(1.1)
Charged to Other Accounts	23.8	(13.0)	(12.5)
Deductions	292.4	112.0	15.6
Balance at End of Period	315.1	230.4	128.6
Trade accounts receivable
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	7.5	7.2	6.8
Charged to Costs and Expenses	2.2	4.3	2.5
Charged to Other Accounts	0.0	0.0	0.0
Deductions	(1.9)	(4.0)	(2.1)
Balance at End of Period	7.8	7.5	7.2
Deferred income tax asset valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	222.9	121.4	119.8
Charged to Costs and Expenses	(233.7)	(1.5)	(3.6)
Charged to Other Accounts	23.8	(13.0)	(12.5)
Deductions	294.3	116.0	17.7
Balance at End of Period	$ 307.3	$ 222.9	$ 121.4