Liabilities Subject to Compromise Components (Details) - USD ($) $ in Millions |
Oct. 31, 2020 |
Aug. 01, 2020 |
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|---|---|---|---|---|---|---|---|---|---|---|---|
| Restructuring Cost and Reserve [Line Items] | |||||||||||
| Accounts payable | $ 286.0 | $ 159.8 | |||||||||
| Accrued expenses and other current liabilities | 174.1 | 64.4 | |||||||||
| Current portion of long-term debt | 0.0 | 227.9 | |||||||||
| Current portion of lease liabilities | 0.6 | [1],[2] | 0.6 | ||||||||
| Other non-current liabilities | 47.3 | 39.2 | |||||||||
| Liabilities Subject to Compromise | 2,097.6 | 2,629.6 | |||||||||
| Liabilities Subject to Compromise | |||||||||||
| Restructuring Cost and Reserve [Line Items] | |||||||||||
| Accounts payable | 375.6 | 395.3 | |||||||||
| Accrued expenses and other current liabilities | 13.8 | 114.8 | |||||||||
| Current portion of long-term debt | [3],[4] | 1,090.2 | 1,252.6 | ||||||||
| Current portion of lease liabilities | 92.7 | 146.4 | |||||||||
| Lease-related liabilities | 419.7 | 614.5 | |||||||||
| Other non-current liabilities | $ 105.6 | $ 106.0 | |||||||||
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