Leases Maturity of Lease Liabilities (Details) $ in Millions	Aug. 03, 2019 USD ($)
Finance Lease, Liability, Payment, Due [Abstract]
2019	$ 1
2020	3
2021	3
2022	3
2023	3
After 2023	31
Total lease payments, Finance	44
Less amount representing interest, finance	19
Finance Lease, Liability	25
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019	180
2020	332
2021	333
2022	311
2023	307
After 2023	5,385
Total lease payments, operating	6,848
Less amount representing interest, operating	3,686
Operating Lease, Liability	3,162
Total Lease Liabilities, Payments Due [Abstract]
2019	181
2020	335
2021	336
2022	314
2023	310
After 2023	5,416
Total lease payments, finance and operating	6,892
Less amount representing interest, finance and operating	3,705
Total Lease Liability	3,187
Lessee, Finance Lease, Option to Extend, Reasonably Certain	12
Lessee, Operating Lease, Option to Extend, Reasonably Certain	3,292
Lessee, Operating Lease, Lease Not Yet Commenced	936
Operating Lease, Payment, Non-Lease Component	1,172
Operating Lease, Payment, Non-Lease Component, Option to Extend, Reasonably Certain	$ 844