Capital contributed to subsidiary from exercise of stock options.

No definition available.

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- Definition

Amount approved to replenish the Company's Stock Repurchase Program.

+ References

No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

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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

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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- Definition

The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Schedule I - Stockholders' Equity - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 02, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Repurchase of treasury shares, shares	5,615,874	3,654,816
Stock repurchased during period, total cost	$ 150,000,000	$ 98,032,000
Treasury stock at cost	402,903,000	252,903,000
Parent Company [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Capital contributed to subsidiary from exercises of stock options	3,696,000	$ 4,230,000
Share Repurchase Program, authorized amount	$ 250,000,000.0
Repurchase of treasury shares, shares	5,615,874	3,654,816	0
Stock repurchased during period, total cost	$ 150,000,000.0	$ 98,000,000.0
Stock Repurchase Program, replenishment amount				$ 150,000,000.0
Treasury stock at cost	$ 402,903,000	$ 252,903,000
Omnibus Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance	15,000,000
Shares available for future issuance	8,480,000
Omnibus Incentive Plan [Member] \| Parent Company [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance	15,000,000
Shares available for future issuance	8,480,000