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Supplemental Financial Information (Accrued Liabilities And Other) (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Supplemental Financial Information [Abstract]    
Personnel costs $ 134.4 $ 82.5
Accrued interest 115.2 100.6
Taxes 61.2 36.9
Deferred revenue 30.0 56.9
Operating Lease, Liability, Current 21.1 0.0
Other 55.8 41.1
Accrued liabilities and other $ 417.7 $ 318.0