Leases, Codification Topic 842 (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
May 15, 2020 |
Oct. 31, 2020 |
Aug. 01, 2020 |
Oct. 31, 2020 |
|
| Leases [Abstract] | ||||
| Operating lease, weighted average discount rate, percent | 22.30% | |||
| Increase (decrease) in operating assets | $ 95 | $ 46 | ||
| Increase (decrease) in operating liabilities | 115 | $ 80 | 112 | |
| Gain (loss) on remeasurement of operating lease assets, net | $ 20 | |||
| Operating lease, right-of-use asset, amortization expense | 2 | 11 | ||
| (Gain)/loss on lease terminations, net of landlord damage claims | (11) | $ (66) | $ 55 | |
| Landlord Damage Claims | $ 91 | |||