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Capital Stock - Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Oct. 31, 2022	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchases		$ 153	$ 153
Average repurchase price per share (in dollars per share)		$ 100.07	$ 100.07
Number of shares authorized and remaining under the repurchase program (in shares)		21,800,000	21,800,000
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchases	$ 47
Average repurchase price per share (in dollars per share)	$ 95.65
Mr. Diller, Chairman
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized share repurchase (up to) (in shares)				23,300,000	20,000,000	15,000,000

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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

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