Percentage of outstanding common shares and preferred shares on fully diluted basis.

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- Definition

Share based compensation arrangement by share based payment award options additional grants in period.

+ References

No definition available.

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- Definition

Stockholders Equity Note [Line Items]

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No definition available.

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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

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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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- Definition

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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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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- Definition

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

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- Definition

Number of options outstanding, including both vested and non-vested options.

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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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- 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

Number of share options (or share units) exercised during the current period.

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Equity - Incentive Equity Awards - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stockholders Equity Note [Line Items]
Stock options, outstanding	16,664,000	15,619,000
Shares issued, exercise of stock options	1,623,000
Proceeds from exercise of stock options, net of transaction costs	$ 5,158	$ 24,478	$ 26,402
Stock Incentive Plan 2020 and 2011
Stockholders Equity Note [Line Items]
Stock options, outstanding	16,664,260
Shares issued, exercise of stock options	1,623,460	5,997,919
Proceeds from exercise of stock options, net of transaction costs	$ 5,200	$ 24,500
Restricted Stock Units (RSUs)
Stockholders Equity Note [Line Items]
Stock units, Granted	3,460,000
Restricted Stock Units (RSUs) \| Stock Incentive Plan 2020 and 2011
Stockholders Equity Note [Line Items]
Restricted stock units, outstanding	7,710,388
Percentage of outstanding shares on a fully diluted basis	2.00%
Shares issued, related to the vesting of RSUs	2,507,748	3,969,811
Treasury shares for settlement of employee tax obligations	975,927	1,650,142
Stock units, Granted	164,657	45,163
Stock units, Vesting Period	3 years
Restricted Stock Units (RSUs) \| Stock Incentive Plan 2020 and 2011 \| Employees
Stockholders Equity Note [Line Items]
Stock units, Granted	1,811,470	782,802
Stock units, Vesting Period	3 years
Stock Options
Stockholders Equity Note [Line Items]
Stock units, Vesting Period	4 years
Stock Options \| Stock Incentive Plan 2020 and 2011
Stockholders Equity Note [Line Items]
Percentage of outstanding shares on a fully diluted basis	4.00%
Stock options, additional granted	210,764	58,721
Stock Options \| Stock Incentive Plan 2020 and 2011 \| Employees
Stockholders Equity Note [Line Items]
Stock options, Granted	2,890,450	2,589,400
Stock units, Vesting Period	4 years
Performance-Based RSUs \| Stock Incentive Plan 2020 and 2011
Stockholders Equity Note [Line Items]
Shares issued, related to the vesting of RSUs	1,240,584
Treasury shares for settlement of employee tax obligations	514,784
Performance-Based RSUs \| Stock Incentive Plan 2020 and 2011 \| Employees
Stockholders Equity Note [Line Items]
Stock units, Granted	1,483,400	645,000