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Debt - Narrative (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
Debt - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Loss on extinguishment of debt	$ 9.0	$ 9.0	$ 0.0	$ 9.0	$ 2.0
Dollar Term Loan, due 2027
Debt Instrument [Line Items]
Repayments of debt				396.0
Long-term debt	912.8	912.8		912.8		$ 919.6
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	1,100.0	1,100.0		1,100.0
Letters of credit outstanding	50.8	50.8		50.8
Outstanding borrowings	0.0	0.0		0.0
Unused borrowing capacity	1,049.2	1,049.2		1,049.2
Revolving Credit Facility \| Ingersoll Rand
Debt Instrument [Line Items]
Letters of credit outstanding	$ 400.0	$ 400.0		$ 400.0