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Share Repurchases (Tables)
6 Months Ended
Jul. 31, 2021
Disclosure Share Repurchase Activity [Abstract]  
Share Repurchase Activity
 13 Weeks Ended26 Weeks Ended
($ and shares in millions except average per share cost)July 31,
2021
August 1,
2020
July 31,
2021
August 1,
2020
Number of shares repurchased (1)1.8 — 1.8 — 
Total cost$55 $— $55 $— 
Average per share cost including commissions $31.55 $— $31.55 $—