Annual report pursuant to Section 13 and 15(d)

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details)

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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 395.6 $ 391.0 $ 442.8
Charged to Costs and Expenses (12.4) (28.1) (56.5)
Charged to Other Accounts (198.0) 10.1 (2.0)
Deductions 20.7 22.6 6.7
Balance at End of Period 205.9 395.6 391.0
Trade accounts receivable      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 12.9 11.2 10.9
Charged to Costs and Expenses 0.3 6.3 5.4
Charged to Other Accounts 0.0 0.0 0.0
Deductions 0.7 (4.6) (5.1)
Balance at End of Period 13.9 12.9 11.2
Deferred income tax asset valuation allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 382.7 379.8 431.9
Charged to Costs and Expenses (12.7) (34.4) (61.9)
Charged to Other Accounts (198.0) 10.1 (2.0)
Deductions 20.0 27.2 11.8
Balance at End of Period $ 192.0 $ 382.7 $ 379.8