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Share Repurchase Authorizations - Repurchase Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Class A common stock
Class of Stock [Line Items]
Shares repurchased (in shares)	314	1,412
Weighted-average price per share (in USD per share)	$ 42.44	$ 58.38
Total purchase price	$ 13	$ 83
Class C capital stock
Class of Stock [Line Items]
Shares repurchased (in shares)	1,698	4,446
Weighted-average price per share (in USD per share)	$ 42.96	$ 59.66
Total purchase price	$ 73	$ 265

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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