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Equity - Treasury stock (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Oct. 22, 2018
Treasury Stock
Treasury stock:
Purchase/acquisition of treasury stock (in shares)	455	158
Repurchases of common stock (in dollars)	$ 39	$ 14
2018 Stock Repurchase Program
Treasury stock:
Shares authorized to be repurchased (in shares)			8,000

X

- Definition

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

+ References

No definition available.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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- References

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- Definition

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

+ References

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-Publisher FASB
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