Annual report pursuant to Section 13 and 15(d)

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details)

v3.8.0.1
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 315.1 $ 230.4 $ 128.6
Charged to Costs and Expenses (1.1) (231.5) 2.8
Charged to Other Accounts 8.1 23.8 (13.0)
Deductions 88.8 292.4 112.0
Balance at End of Period 410.9 315.1 230.4
Trade accounts receivable      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 7.8 7.5 7.2
Charged to Costs and Expenses 5.0 2.2 4.3
Charged to Other Accounts 0.0 0.0 0.0
Deductions (3.7) (1.9) (4.0)
Balance at End of Period 9.1 7.8 7.5
Deferred income tax asset valuation allowance      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 307.3 222.9 121.4
Charged to Costs and Expenses (6.1) (233.7) (1.5)
Charged to Other Accounts 8.1 23.8 (13.0)
Deductions 92.5 294.3 116.0
Balance at End of Period $ 401.8 $ 307.3 $ 222.9