Quarterly report pursuant to Section 13 or 15(d)

Debt - Senior Notes (Details)

v3.19.1
Debt - Senior Notes (Details) - USD ($)
$ in Millions
3 Months Ended
Feb. 01, 2019
Jan. 31, 2019
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Debt Instrument          
Payments of call premiums     $ 39.5 $ 0.6  
Write off debt issuance cost and premium   $ 22.9      
Senior Notes | USD Senior Notes, Due 2025          
Debt Instrument          
Debt extinguishment cost $ 44.0        
Payments of call premiums 29.5        
Write off debt issuance cost and premium $ 14.5        
Stated interest rate (percent)     5.875%   5.875%