Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	$ 3,334.8	$ 3,372.5	$ 1,152.3	$ 849.6
Valuation Allowances and Reserves, Charged to Cost and Expense	(40.6)	54.3	634.9
Valuation Allowances and Reserves, Charged to Other Accounts	5.1	2,165.9	(12.6)
Valuation Allowances and Reserves, Reserves of Businesses Acquired	0.0	0.0	0.0
Valuation Allowances and Reserves, Deductions	2.2	0.0	319.6
Allowance for Trade Receivables [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	0.0	7.1	0.0	$ 0.0
Valuation Allowances and Reserves, Charged to Cost and Expense	0.0	7.1	0.0
Valuation Allowances and Reserves, Charged to Other Accounts	(7.1)	0.0	0.0
Valuation Allowances and Reserves, Reserves of Businesses Acquired	0.0	0.0	0.0
Valuation Allowances and Reserves, Deductions	$ 0.0	$ 0.0	$ 0.0