Aggregate intrinsic value price per share.

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- Definition

Performance restricted stock granted.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Percentage of Targeted Shares Vested

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- Definition

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

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- Definition

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

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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.

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- Definition

Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.

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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

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

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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.

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No definition available.

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- Definition

Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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No definition available.

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- Definition

Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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No definition available.

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Stockholders' Equity - Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax payments, for net share settlement of share based award	$ 4,051	$ 14,127	$ 3,453
Incremental stock option expense	$ 37,400
Weighted average period	6 years
Performance Based Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Approximate units of performance restricted stock granted (in shares)	6,000,000.0	100,000	400,000
Performance criteria met for approximate units (in shares)	100,000
Approximate units outstanding (in shares)	400,000
Incremental stock option expense	$ 24,100	$ 4,800	$ 2,500
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock price on the last trading day of the period (in dollars per share)	$ 73.28
Aggregate intrinsic value, RSUs vested	$ 39,400	$ 36,600	$ 14,500
Shares withheld, for net share settlement of share based award (in shares)	100,000
Tax payments, for net share settlement of share based award	$ 3,500
Performance criteria met for approximate units (in shares)	650,000	772,000	519,000
Approximate units outstanding (in shares)	7,282,000	1,655,000	2,348,000	1,330,000
Unrecognized stock-based compensation expense related to non-vested stock options	$ 190,800
Weighted average period	4 years 10 months 24 days
eXponential Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Approximate units of performance restricted stock granted (in shares)	5,900,000
Incremental stock option expense	$ 17,500
Minimum \| Performance Based Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of targeted shares earned that can vest	0.00%
Maximum \| Performance Based Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of targeted shares earned that can vest	200.00%