Commitments and Contingencies (Cost/Income Asbestos Related Claims after Recoveries) (Details) - Asbestos [Member] - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Continuing operations	$ 3.7	$ 0.5	$ 7.8	$ 1.3
Discontinued operations	36.0	(11.4)	30.5	(20.9)
Total	$ 39.7	$ (10.9)	$ 38.3	$ (19.6)

Discontinued Operations Costs Income Asbestos Related Settlement And Defense

No definition available.

Name:	ird_DiscontinuedOperationsCostsIncomeAsbestosRelatedSettlementAndDefense
Namespace Prefix:	ird_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration