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Stockholders’ Deficit - Stock Repurchase Program (Details) - USD ($) shares in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Class of Stock [Line Items]
Stock repurchase program, authorized amount			$ 1,200,000,000	$ 1,000,000,000	$ 600,000,000
Stock repurchased and retired during period (in shares)	11.0	18.6
Stock repurchased and retired during period, aggregate purchase price	$ 259,900,000	$ 431,900,000
Convertible Debt
Class of Stock [Line Items]
Stock repurchased and retired during period (in shares)		8.6
Stock repurchased and retired during period, aggregate purchase price		$ 200,000,000

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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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