Stockholders' Equity - Narrative (Details) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Oct. 31, 2021 USD ($) stock_class $ / shares shares	Oct. 31, 2021 USD ($) stock_class $ / shares shares	Feb. 28, 2021 USD ($)	Jan. 31, 2021 $ / shares shares
Class of Stock [Line Items]
Shares authorized (in shares)	20,000,000	20,000,000		20,000,000
Shares issued (in shares)	0	0		0
Shares outstanding (in shares)	0	0		0
Number of classes of stock | stock_class	2	2
Shares authorized (in shares)	2,250,000,000	2,250,000,000		2,250,000,000
Additional value approved for repurchase | $			$ 200.0
Stock repurchased and retired (in shares)	2,361,318	6,057,084
Shares repurchased and retired, average purchase price (in dollars per share) | $ / shares	$ 23.79	$ 21.54
Stock repurchased and retired during period, value | $	$ 56.2	$ 130.5
Authorized amount remaining under stock repurchase program | $	$ 69.5	$ 69.5
Class A
Class of Stock [Line Items]
Shares authorized (in shares)	2,000,000,000	2,000,000,000		2,000,000,000
Par value per share (in dollars per share) | $ / shares	$ 0.0001	$ 0.0001		$ 0.0001
Shares issued (in shares)	290,081,069	290,081,069		278,363,000
Shares outstanding (in shares)	290,081,069	290,081,069		278,363,000
Class B
Class of Stock [Line Items]
Shares authorized (in shares)	250,000,000	250,000,000		250,000,000
Par value per share (in dollars per share) | $ / shares	$ 0.0001	$ 0.0001		$ 0.0001