The total fair value of options and non-option equity instruments that vested during the period.

No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

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

+ References

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- Definition

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.

+ References

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

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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- References

No definition available.

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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.

+ References

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

+ References

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Expected term of 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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Stock Incentive Plans - Narrative (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock Incentive Plans Narratives [Abstract]
Unrecognized compensation expense	$ 213
Compensation expense	$ 351	$ 456	$ 316
Weighted-average period for total unrecognized compensation expense for nonvested equity awards	1 year 3 months 18 days
Fair value of stock incentive awards vested	$ 275	$ 287	$ 317
Performance Share Units (PSUs)
Stock Incentive Plans Narratives [Abstract]
Performance period	3 years
Stock options
Stock Incentive Plans Narratives [Abstract]
Expiration period	10 years
Dividend yield	4.25%	3.90%	3.69%
Expected volatility rate	26.20%	28.00%	28.00%
Risk-free interest rate	1.44%	2.62%	2.73%
Expected option life	5 years 11 months 19 days	6 years	5 years 11 months 23 days
Performance-based Employee Stock Options
Stock Incentive Plans Narratives [Abstract]
Service period	55 months
Service-based Employee Stock Options \| Minimum
Stock Incentive Plans Narratives [Abstract]
Service period	19 months
Service-based Employee Stock Options \| Maximum
Stock Incentive Plans Narratives [Abstract]
Service period	3 years
Restricted Stock Awards (RSAs)
Stock Incentive Plans Narratives [Abstract]
Service period	3 years
Restricted Stock Units (RSUs)
Stock Incentive Plans Narratives [Abstract]
Service period	3 years
Cruise Stock Incentive Awards
Stock Incentive Plans Narratives [Abstract]
Unrecognized compensation expense	$ 863
Cruise Stock Incentive Awards \| Stock options
Stock Incentive Plans Narratives [Abstract]
Expiration period	10 years
Granted (in shares)	0.0
Cruise Stock Incentive Awards \| Stock options \| Minimum
Stock Incentive Plans Narratives [Abstract]
Service period	4 years
Cruise Stock Incentive Awards \| Stock options \| Maximum
Stock Incentive Plans Narratives [Abstract]
Service period	10 years
Cruise Stock Incentive Awards \| Stock options and RSUs
Stock Incentive Plans Narratives [Abstract]
Weighted-average period for total unrecognized compensation expense for nonvested equity awards	7 years 1 month 6 days
Total units outstanding (in shares)	79.3
Cruise Stock Incentive Awards \| Restricted Stock Units (RSUs)
Stock Incentive Plans Narratives [Abstract]
Unrecognized compensation expense	$ 0	$ 0	$ 0
Cruise Stock Incentive Awards \| Restricted Stock Units (RSUs) \| Maximum
Stock Incentive Plans Narratives [Abstract]
Service period	4 years