Expenses Related To Stock Purchase Extension

No definition available.

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Namespace Prefix:	g_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Percentage increase in quarterly cash dividend.

+ References

No definition available.

+ Details

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- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
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-Name Accounting Standards Codification
-Section S99
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-Subparagraph (SX 210.3-04)
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-SubTopic 405
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+ Details

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Balance Type:	debit
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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.

+ Details

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Balance Type:	na
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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
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

+ Details

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Period Type:	duration

- Definition

Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
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-Publisher FASB
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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-Publisher FASB
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- Details

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- Details

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- Details

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Capital Stock (Detail) - USD ($)							3 Months Ended					6 Months Ended		12 Months Ended
Capital Stock (Detail) - USD ($)	Jun. 18, 2025	Mar. 11, 2025	Feb. 06, 2025	Jun. 10, 2024	Mar. 11, 2024	Feb. 08, 2024	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Equity, Class of Treasury Stock [Line Items]
Stock repurchase authorized amount							$ 2,750,000,000					$ 2,750,000,000
Shares repurchased and retired (in shares)												2,784,988	1,898,010
Common stock shares repurchased price per share (in usd per share)												$ 48.98	$ 34.67
Expenses related to stock purchase												$ 256,000	$ 538,000
Stock repurchase program, remaining authorized repurchase amount							$ 554,045,000					$ 554,045,000
Increase in quarterly cash dividend (in percentage)			11.00%			11.00%
Dividend declared (in usd per share)							$ 0.17	$ 0.17	$ 0.1525	$ 0.1525	$ 0.1375	$ 0.34	$ 0.3050		$ 0.61	$ 0.55
Dividends common stock	$ 29,624,000	$ 29,784,000		$ 27,337,000	$ 27,492,000		$ 29,624,000		$ 27,337,000			$ 59,408,000	$ 54,829,000
Forecast
Equity, Class of Treasury Stock [Line Items]
Dividend declared (in usd per share)														$ 0.68
Q1 2025
Equity, Class of Treasury Stock [Line Items]
Stock repurchase authorized amount							$ 500,000					500,000
Share repurchase open market
Equity, Class of Treasury Stock [Line Items]
Aggregate amount of common stock shares repurchased												$ 92,630,000	$ 92,961,000