Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

The computations of basic and diluted income per share are as follows.

	Year Ended December 31,
	2020		2019		2018
Net income (loss) attributable to Ingersoll Rand Inc.	$	(33.3)	$	159.1	$	269.4
Average shares outstanding:
Basic	382.8		203.5		201.6
Diluted	382.8		208.9		209.1
Earnings (loss) per share:
Basic	$	(0.09)	$	0.78	$	1.34
Diluted	$	(0.09)	$	0.76	$	1.29