Hedging Activities, Derivative Instruments and Credit Risk - Investment in Consolidated Subsidiaries with Functional Currencies Other than USD (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest rate swap contracts
Derivatives, Fair Value [Line Items]
Gain (loss), net of income tax, recorded through other comprehensive income	$ 36.4	$ 35.0	$ (45.1)

The gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that of income tax was recognized in other comprehensive income during the current period.

No definition available.

Name:	gdi_DerivativeInstrumentsGainLossOfIncomeTaxRecordedInOtherComprehensiveIncome
Namespace Prefix:	gdi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration