Stockholders Equity Note Disclosure [Line Items]

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

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- Definition

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the YYYY-MM-DD format.

+ References

No definition available.

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Publisher FASB
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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Publisher FASB
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

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-Publisher FASB
-Name Accounting Standards Codification
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Shareholders' Equity (Detail) - USD ($) $ / shares in Units, shares in Millions	1 Months Ended		3 Months Ended						9 Months Ended
	Dec. 31, 2020	May 31, 2018	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Dec. 01, 2020	May 08, 2018
Stockholders Equity Note Disclosure [Line Items]
Share repurchase (in shares)									1.4
Share repurchase			$ 50,000,000.0	$ 40,400,000	$ 9,600,000			$ 115,200,000	$ 100,000,000
Dividends (in dollars per share)			$ 0.20	$ 0.20	$ 0.20	$ 0.19	$ 0.19	$ 0.19
Dividends payable	$ 33,200,000		$ 33,100,000						$ 33,100,000
May 2018 Share Repurchase Program [Member]
Stockholders Equity Note Disclosure [Line Items]
Repurchase of shares of our common stock up to a maximum aggregate value											$ 750,000,000
Common stock authorized for repurchase, expiration date		May 31, 2021
Share repurchase (in shares)									0.8
Share repurchase									$ 50,000,000
December 2020 Share Repurchase Program
Stockholders Equity Note Disclosure [Line Items]
Repurchase of shares of our common stock up to a maximum aggregate value										$ 750,000,000
Common stock authorized for repurchase, expiration date	Dec. 31, 2025
Share repurchase (in shares)									0.6
Share repurchase									$ 50,000,000
Share repurchase program remaining available amount			$ 700,000,000						$ 700,000,000