Basis of Presentation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Increase (Decrease) In Cost Of Goods Sold	$ 7.9
Increase (Decrease) In Selling Administrative Expense	$ (7.9)

Increase Decrease In Selling Administrative Expense

No definition available.

Name:	ir_IncreaseDecreaseInSellingAdministrativeExpense
Namespace Prefix:	ir_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration