v2.3.0.15

Income Taxes (Tables)

9 Months Ended

Sep. 30, 2011

Income Taxes [Abstract]

Schedule Of Activities Related To Unrecognized Tax Benefits For Uncertain Tax Positions

Opening balance at January 1, 2011			20,016
Increase related to prior year tax positions, including recorded against Goodwill			2,110
Increase related to current year tax positions, including recorded against Goodwill			2,319
Decrease related to prior year tax positions			(150	)
Effect of exchange rate changes			(592	)
Closing balance at September 30, 2011			23,703

X

- Definition

A summary of unrecognized tax benefits recognized during the period. An unrecognized tax benefit is the difference between a tax position taken in a tax return and the amounts recognized in the financial statements for which it is more likely than not, based on the technical merits of the position, that the tax position will not be sustained upon examination.

+ Details

Name:	g_ScheduleOfUnrecognizedTaxBenefitsTextBlock
Namespace Prefix:	g
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration