Common Stock and Stock Plans, Summary of Restricted Share Rights and Restricted Share Awards (Details) - Restricted share rights [Member] - USD ($)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Summary of Restricted Share Rights and Restricted Share Awards [Abstract]
Nonvested at January 1, 2022 (in shares)	51,604,179
Granted (in shares)	24,793,104
Vested (in shares)	(20,380,394)
Canceled or forfeited (in shares)	(2,779,746)
Nonvested at December 31, 2022 (in shares)	53,237,143	51,604,179
Weighted- average grant-date fair value
Nonvested at January 1, 2022 (in dollars per share)	$ 37.98
Granted (in dollars per share)	51.80	$ 32.99	$ 42.53
Vested (in dollars per share)	42.30
Canceled or forfeited (in dollars per share)	44.18
Nonvested at December 31, 2022 (in dollars per share)	$ 42.44	$ 37.98
Cost amount to holders of incentive compensation share plans	$ 0
Unrecognized compensation cost related to nonvested awards	$ 986,000,000
Expected weighted-average period to recognize compensation costs related to awards	2 years 4 months 24 days
Fair value of RSRs vested	$ 1,000,000,000	$ 902,000,000	$ 981,000,000
Long-term incentive compensation plans [Member] \| Minimum [Member]
Weighted- average grant-date fair value
Award vesting period	3 years
Long-term incentive compensation plans [Member] \| Maximum [Member]
Weighted- average grant-date fair value
Award vesting period	5 years

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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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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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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- Definition

Cost amount to holders of incentive compensation share plans.

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