Equity Compensation - Options Outstanding (Details) shares in Millions	Jan. 31, 2022 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of securities to be issued upon exercise or vesting of outstanding options and awards (in shares)	4.1
Weighted-average exercise price of outstanding options (in dollars per share) | $ / shares	$ 21.03
Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (in shares)	13.3
Equity Compensation Plans Approved by Security Holders
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of securities to be issued upon exercise or vesting of outstanding options and awards (in shares)	4.1
Weighted-average exercise price of outstanding options (in dollars per share) | $ / shares	$ 21.03
Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (in shares)	13.3
ESP Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (in shares)	5.6