Common Stock, Dividends, Per Share, Annualized

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- Definition

Common Stock, Increase (Decrease) in Dividend Rate, Percentage

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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.

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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- Definition

Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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- Definition

Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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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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Capital Stock (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended			18 Months Ended
Capital Stock (Narrative) (Details) - USD ($)	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019	Jan. 31, 2021	Apr. 30, 2020	Jul. 31, 2019	May 31, 2018	Jan. 31, 2018	Jul. 31, 2017	Oct. 31, 2016	Jul. 31, 2015
Class of Stock [Line Items]
Common stock, shares authorized (in shares)			12,000,000,000
Increase in quarterly dividend rate	2.40%
Cash dividends declared (USD per share)	$ 0.86	$ 0.84	$ 3.40	$ 3.28	$ 3.00
Common stock, dividends, per share, annualized (USD per share)			$ 3.44
Stock repurchase program, authorized amount			$ 0
Repurchase of common stock (in shares)				16,503,317	27,878,324
Average price of repurchased shares (USD per share)				$ 51.24	$ 60.00
January 2018 Share Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount										$ 2,000,000,000.0	$ 1,000,000,000.0
Repurchase of common stock (in shares)				6,400,000	27,600,000	34,000,000.0
Average price of repurchased shares (USD per share)				$ 54.36	$ 59.89	$ 58.86
July 2019 Share Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount									$ 1,000,000,000.0
Repurchase of common stock (in shares)				10,100,000
Average price of repurchased shares (USD per share)				$ 49.29
Amount remaining in the share repurchased program								$ 500,000,000
July 2015 Share Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount												$ 4,000,000,000.0	$ 3,000,000,000.0	$ 1,000,000,000.0
Repurchase of common stock (in shares)					300,000
Average price of repurchased shares (USD per share)					$ 71.68
January 2021 Share Repurchase Program [Member] \| Subsequent Event [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount							$ 2,000,000,000.0
Serial Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)			10,000,000
Preferred stock, par value (USD per share)			$ 1.00
Preferred stock, shares issued (in shares)			0
Share-based Payment Arrangement [Member]
Class of Stock [Line Items]
Shares of common stock reserved for stock-based awards (in shares)			28,357,980