Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Fair Value of Financial Instruments (Details)

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Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Aug. 03, 2019
Feb. 02, 2019
Aug. 04, 2018
Fair Value | Fair value, inputs, level 1 | Senior Notes      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term borrowings $ 4,460.8 $ 4,198.6 $ 4,288.7
Fair Value | Fair value, inputs, level 2 | Term Loan Facility      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term borrowings 0.0 0.0 774.2
Carrying Value | Fair value, inputs, level 1 | Senior Notes      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term borrowings 4,277.5 4,275.5 4,273.4
Carrying Value | Fair value, inputs, level 2 | Term Loan Facility      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term borrowings $ 0.0 $ 0.0 $ 779.8