Subsequent Event (Notes)	9 Months Ended
Oct. 31, 2019
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Event ASDA Group Pension Scheme In the fourth quarter of fiscal 2020, Asda, Walmart and the Trustee of the Asda Group Pension Scheme (the "Plan") entered into an agreement pursuant to which Asda made a cash contribution of $1.1 billion to the Plan which enabled the Plan to purchase a bulk insurance annuity contract for the benefit of Plan participants. The agreement between Asda, Walmart and the Trustee of the Plan contemplates that subsequent to the purchase of the bulk annuity insurance contract by the Plan, each of the Plan participants will be issued individual annuity contracts. The issuer of the individual annuity insurance contracts will be solely responsible for paying each participant’s benefits in full and will release the Plan and Asda from any future obligations. The Company expects the issuance of individual annuity contracts to the Plan participants to take place in late fiscal 2021 or early fiscal 2022, which will trigger a pension settlement that will result in all Plan balances, including accumulated pension components within other comprehensive income, being charged to expense.

Subsequent Event (Notes)

9 Months Ended

Oct. 31, 2019

Subsequent Event

ASDA Group Pension Scheme

In the fourth quarter of fiscal 2020, Asda, Walmart and the Trustee of the Asda Group Pension Scheme (the "Plan") entered into an agreement pursuant to which Asda made a cash contribution of $1.1 billion to the Plan which enabled the Plan to purchase a bulk insurance annuity contract for the benefit of Plan participants. The agreement between Asda, Walmart and the Trustee of the Plan contemplates that subsequent to the purchase of the bulk annuity insurance contract by the Plan, each of the Plan participants will be issued individual annuity contracts. The issuer of the individual annuity insurance contracts will be solely responsible for paying each participant’s benefits in full and will release the Plan and Asda from any future obligations. The Company expects the issuance of individual annuity contracts to the Plan participants to take place in late fiscal 2021 or early fiscal 2022, which will trigger a pension settlement that will result in all Plan balances, including accumulated pension components within other comprehensive income, being charged to expense.