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Equity - Changes in Shares of Common Stock (Details) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Issued
Beginning of year	2,091,562,747	1,798,844,267	1,795,652,203
Acquisition of Concho	0	285,928,872	0
Distributed under benefit plans	9,322,387	6,789,608	3,192,064
End of year	2,100,885,134	2,091,562,747	1,798,844,267
Held in Treasury
Beginning of year	789,319,875	730,802,089	710,783,814
Repurchase of common stock	87,709,187	58,517,786	20,018,275
End of year	877,029,062	789,319,875	730,802,089

X

- Definition

Treasury Stock, Common

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No definition available.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Number of shares of stock issued during the period pursuant to acquisitions.

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- Definition

Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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