Class Of Warrant Or Right, Stated Interest Rate

No definition available.

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- Definition

Fair market value of common stock, Percentage.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award maximum amount per employee.

+ References

No definition available.

+ Details

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- Definition

Unrecognized compensation forfeited rate.

+ References

No definition available.

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- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

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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

The cash outflow to reacquire common stock during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
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- Definition

The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt.

+ 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.

+ 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

+ Details

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- Definition

The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

No definition available.

+ Details

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- Definition

The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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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.

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- Definition

Number of shares authorized for issuance 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.

+ Details

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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.

+ References

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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

Amount of stock repurchase plan authorized.

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No definition available.

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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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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate 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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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

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Stockholders' Equity - Additional Information (Details) - USD ($)	1 Months Ended		2 Months Ended	3 Months Ended		12 Months Ended
	Feb. 11, 2021	Dec. 31, 2020	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchased of common stock						$ 605,000,000	$ 54,000,000
Common stock purchases						606,000,000	47,000,000	$ 0
Cash paid for partial termination of 1.125% Warrants						$ 30,000,000	$ 514,000,000	$ 549,000,000
Unrecognized compensation forfeited rate						12.20%
Stock option expiration period						4 years
Granted (in shares)						0	0	0
RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum award vesting period						4 years
Weighted average period for recognition						2 years 2 months 12 days
Unrecognized compensation expense		$ 42,000,000	$ 42,000,000			$ 42,000,000
Weighted average period of unrecognized compensation expense						2 years 2 months 12 days
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum award vesting period						3 years
Weighted average period for recognition						1 year 2 months 12 days
Unrecognized compensation expense		$ 23,000,000	$ 23,000,000			$ 23,000,000
Weighted average period of unrecognized compensation expense						1 year 2 months 12 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum award vesting period						4 years
Stock option expiration period						10 years
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee purchase price as a percentage of stock price						85.00%
Maximum annual contribution per employee						$ 25,000
Risk-free interest rate, minimum						0.20%
Risk-free interest rate, maximum						2.30%
Minimum expected volatility rate inputs for fair value measurement						31.00%
Maximum expected volatility rate inputs for fair value measurement						51.00%
Dividend yield						0.00%
Expected term of awards						6 months
2019 EIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued under ESPP (in shares)							2,900,000
1.125% Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stated percentage of warrants		1.125%	1.125%			1.125%
Warrants outstanding (in shares)		310,000	310,000			310,000
Cash paid for partial termination of 1.125% Warrants				$ 30,000,000
Stated interest rate		1.125%	1.125%			1.125%
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized							$ 500,000,000		$ 500,000,000
Repurchased of common stock (in shares)		29,000	766,000		3,400,000	4,000,000
Repurchased of common stock		$ 6,000,000	$ 159,000,000		$ 446,000,000
Common stock purchases				$ 7,000,000
Average cost (USD per share)			$ 208.37		$ 132.45
Share-based compensation (in shares)						1,000,000
Common Stock \| Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation (in shares)						244,000	242,000
Common Stock \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchased of common stock (in shares)	577,000
Repurchased of common stock	$ 122,000,000
Average cost (USD per share)	$ 211.65