Common and special voting stock shares outstanding.

No definition available.

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- Definition

Special voting stock shares outstanding.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

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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).

+ References

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- Definition

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

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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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Shareholders Equity - Changes in the Composition of the Share of CHN Industrial (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Common shares outstanding (in shares)	1,353,910,471	1,350,132,117		1,353,910,471	1,350,132,117
Special voting shares outstanding (in shares)	387,951,166			371,328,154	387,951,166
Common and special voting shares, shares outstanding	1,738,083,283	1,742,557,582	1,752,499,196
Capital increase (in shares)	3,778,354	2,568,751	2,741,322
Common stock repurchases	0	(6,268,592)	(12,501,870)
Retirement of special voting shares (in shares)	(16,623,012)	(774,458)	(181,066)
Common shares, shares outstanding	1,353,910,471	1,350,132,117
Special voting shares, shares outstanding	387,951,166
Common and special voting shares, shares outstanding	1,725,238,625	1,738,083,283	1,742,557,582
Common Shares
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Common shares outstanding (in shares)	1,353,910,471	1,350,132,117	1,353,831,958	1,353,910,471	1,350,132,117	1,353,831,958	1,363,592,506
Capital increase (in shares)	3,778,354	2,568,751	2,741,322
Common stock repurchases	0	(6,268,592)	(12,501,870)
Common shares, shares outstanding	1,353,910,471	1,350,132,117	1,353,831,958
Special Voting Shares
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Special voting shares outstanding (in shares)	387,951,166	388,725,624	388,906,690	371,328,154	387,951,166	388,725,624	388,906,690
Common stock repurchases			0
Retirement of special voting shares (in shares)	(16,623,012)	(774,458)	(181,066)
Special voting shares, shares outstanding	387,951,166	388,725,624	388,906,690