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Debt and Credit Facilities (Narrative) (Details) (USD $)
 12 Months Ended 1 Months Ended 3 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Oct. 31, 2014
Jul. 31, 2013
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2013
Oct. 15, 2013
Feb. 15, 2013
Weighted average interest rate on short term borrowings and current maturities of long term debt 5.20%us-gaap_ShortTermDebtWeightedAverageInterestRate 6.50%us-gaap_ShortTermDebtWeightedAverageInterestRate       5.20%us-gaap_ShortTermDebtWeightedAverageInterestRate        
Commercial paper program maximum aggregate amount available to be issued $ 2,000,000,000ir_CommercialPaperProgramMaximumAggregateAmountAvailableToBeIssued         $ 2,000,000,000ir_CommercialPaperProgramMaximumAggregateAmountAvailableToBeIssued        
Commercial Paper Program, amounts outstanding 100,000,000us-gaap_CommercialPaper 0us-gaap_CommercialPaper       100,000,000us-gaap_CommercialPaper        
Short-term borrowings and current maturities of long-term debt 482,700,000us-gaap_DebtCurrent 367,700,000us-gaap_DebtCurrent       482,700,000us-gaap_DebtCurrent        
Repayments of Long-term Debt 508,000,000us-gaap_RepaymentsOfLongTermDebt 1,265,000,000us-gaap_RepaymentsOfLongTermDebt 418,900,000us-gaap_RepaymentsOfLongTermDebt              
Line of credit facility, maximum borrowing capacity (2,000,000,000)us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity         (2,000,000,000)us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity        
Debt Instrument, Fair Value Disclosure 4,661,400,000us-gaap_DebtInstrumentFairValue 3,803,800,000us-gaap_DebtInstrumentFairValue       4,661,400,000us-gaap_DebtInstrumentFairValue        
Senior Notes Issued in 2014 [Member]                    
Debt instrument, face amount 1,100,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_SeniorNotesIssuedin2014Member		         1,100,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_SeniorNotesIssuedin2014Member		        
Two Point Six Two Five Percent Senior Notes Due Two Thousand Twenty [Member]                    
Debt instrument, face amount 300,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_TwoPointSixTwoFivePercentSeniorNotesDueTwoThousandTwentyMember		         300,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_TwoPointSixTwoFivePercentSeniorNotesDueTwoThousandTwentyMember		        
Debt instrument, interest rate 2.625%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_TwoPointSixTwoFivePercentSeniorNotesDueTwoThousandTwentyMember		         2.625%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_TwoPointSixTwoFivePercentSeniorNotesDueTwoThousandTwentyMember		        
Three Point Five Five Percent Senior Notes due 2024 [Member]                    
Debt instrument, face amount 500,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_ThreePointFiveFivePercentSeniorNotesdue2024Member		         500,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_ThreePointFiveFivePercentSeniorNotesdue2024Member		        
Debt instrument, interest rate 3.55%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_ThreePointFiveFivePercentSeniorNotesdue2024Member		         3.55%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_ThreePointFiveFivePercentSeniorNotesdue2024Member		        
Four Point Six Five Percent Senior Notes due Twenty Forty Four [Member]                    
Debt instrument, face amount 300,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointSixFivePercentSeniorNotesdueTwentyFortyFourMember		         300,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointSixFivePercentSeniorNotesdueTwentyFortyFourMember		        
Debt instrument, interest rate 4.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointSixFivePercentSeniorNotesdueTwentyFortyFourMember		         4.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointSixFivePercentSeniorNotesdueTwentyFortyFourMember		        
Five Point Five Zero Percent Senior Notes Due Two Thousand Fifteen [Member]                    
Debt instrument, interest rate 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FivePointFiveZeroPercentSeniorNotesDueTwoThousandFifteenMember		         5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FivePointFiveZeroPercentSeniorNotesDueTwoThousandFifteenMember		 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FivePointFiveZeroPercentSeniorNotesDueTwoThousandFifteenMember		      
Repayments of Long-term Debt       200,000,000us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= ir_FivePointFiveZeroPercentSeniorNotesDueTwoThousandFifteenMember		            
Nine Point Five Zero Percent Senior Notes Due Two Thousand Fourteen [Member]                    
Debt instrument, interest rate         9.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_NinePointFiveZeroPercentSeniorNotesDueTwoThousandFourteenMember		          
Repayments of Long-term Debt         655,000,000us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= ir_NinePointFiveZeroPercentSeniorNotesDueTwoThousandFourteenMember		          
Redemption Premium         45,600,000us-gaap_RedemptionPremium
/ us-gaap_LongtermDebtTypeAxis
= ir_NinePointFiveZeroPercentSeniorNotesDueTwoThousandFourteenMember		          
4.75% Senior Notes Due 2015 [Member]                    
Debt instrument, interest rate 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointSevenFivePercentSeniorNotesDueTwoThousandFifteenMember		         4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointSevenFivePercentSeniorNotesDueTwoThousandFifteenMember		 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointSevenFivePercentSeniorNotesDueTwoThousandFifteenMember		      
Repayments of Long-term Debt       300,000,000us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointSevenFivePercentSeniorNotesDueTwoThousandFifteenMember		            
Redemption in Fourth Quarter Twenty Fourteen [Member]                    
Redemption Premium           10,200,000us-gaap_RedemptionPremium
/ us-gaap_LongtermDebtTypeAxis
= ir_RedemptioninFourthQuarterTwentyFourteenMember		        
6.875% Senior Notes Due 2018 [Member]                    
Debt instrument, interest rate 6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_SixPointEightSevenFivePercentSeniorNotesDueTwoThousandEighteenMember		         6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_SixPointEightSevenFivePercentSeniorNotesDueTwoThousandEighteenMember		        
2.875% Senior Notes Due 2019 [Member]                    
Debt instrument, face amount               350,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_TwoPointEightSevenFivePercentSeniorNotesDueTwoThousandNineteenMember		    
Debt instrument, interest rate               2.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_TwoPointEightSevenFivePercentSeniorNotesDueTwoThousandNineteenMember		    
9.00% Debentures Due 2021 [Member]                    
Debt instrument, interest rate 9.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_NinePointZeroZeroPercentDebenturesDueTwoThousandTwentyOneMember		         9.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_NinePointZeroZeroPercentDebenturesDueTwoThousandTwentyOneMember		        
4.250% Senior Notes Due 2013 [Member]                    
Debt instrument, face amount               700,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointTwoFivePercentSeniorNotesDueTwoThousandTwentyThreeMember		    
Debt instrument, interest rate               4.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FourPointTwoFivePercentSeniorNotesDueTwoThousandTwentyThreeMember		    
7.20% Debentures Due 2014-2025 [Member]                    
Debt instrument, interest rate 7.20%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_SevenPointTwoZeroPercentDebenturesDueTwoThousandFourteenToTwoThousandTwentyFiveMemberMember		         7.20%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_SevenPointTwoZeroPercentDebenturesDueTwoThousandFourteenToTwoThousandTwentyFiveMemberMember		        
6.48% Debentures Due 2025 [Member]                    
Debt instrument, interest rate 6.48%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_SixPointFourEightPercentDebenturesDueTwoThousandTwentyFiveMember		         6.48%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_SixPointFourEightPercentDebenturesDueTwoThousandTwentyFiveMember		        
5.750% Senior Notes Due 2043 [Member]                    
Debt instrument, face amount               500,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_FivePointSevenFivePercentSeniorNotesDueTwoThousandFortyThreeMember		    
Debt instrument, interest rate               5.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= ir_FivePointSevenFivePercentSeniorNotesDueTwoThousandFortyThreeMember		    
Other Loans And Notes [Member]                    
Other loans and notes, maturing in various amounts to 2019, end of year average interest rates 3.01%us-gaap_LongtermDebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ir_OtherLoansAndNotesMember		 1.00%us-gaap_LongtermDebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ir_OtherLoansAndNotesMember		       3.01%us-gaap_LongtermDebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ir_OtherLoansAndNotesMember		        
Senior Notes Issued in 2013 [Member]                    
Debt instrument, face amount               1,550,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= ir_SeniorNotesIssuedIn2013Member		    
Debentures With Put Feature [Member]                    
Short-term borrowings and current maturities of long-term debt 343,000,000us-gaap_DebtCurrent
/ us-gaap_ShortTermDebtTypeAxis
= ir_DebenturesWithPutFeatureMember		 343,000,000us-gaap_DebtCurrent
/ us-gaap_ShortTermDebtTypeAxis
= ir_DebenturesWithPutFeatureMember		       343,000,000us-gaap_DebtCurrent
/ us-gaap_ShortTermDebtTypeAxis
= ir_DebenturesWithPutFeatureMember		        
Debt instrument, maturity date range, start Jan. 01, 2027                  
Debt instrument, maturity date range, end Dec. 31, 2028                  
Debentures with put option available to be excercised                 305,800,000ir_DebenturesWithPutOptionAvailableToBeExcercised
/ us-gaap_ShortTermDebtTypeAxis
= ir_DebenturesWithPutFeatureMember		 37,200,000ir_DebenturesWithPutOptionAvailableToBeExcercised
/ us-gaap_ShortTermDebtTypeAxis
= ir_DebenturesWithPutFeatureMember
Six Point Zero Zero Zero Percent Senior Notes Due Two Thousand Thirteen [Member]                    
Debt instrument, interest rate 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_ShortTermDebtTypeAxis
= ir_SixPointZeroZeroZeroPercentSeniorNotesDueTwoThousandThirteenMember		       6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_ShortTermDebtTypeAxis
= ir_SixPointZeroZeroZeroPercentSeniorNotesDueTwoThousandThirteenMember		 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_ShortTermDebtTypeAxis
= ir_SixPointZeroZeroZeroPercentSeniorNotesDueTwoThousandThirteenMember		        
Repayments of Long-term Debt         600,000,000us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_ShortTermDebtTypeAxis
= ir_SixPointZeroZeroZeroPercentSeniorNotesDueTwoThousandThirteenMember		          
Five Year Revolving Credit Facility Refinanced [Member]                    
Line of credit facility, maximum borrowing capacity 1,000,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ ir_CreditFacilityByDurationOfLineOfCreditAxis
= ir_FiveYearRevolvingCreditFacilityRefinancedMember		         1,000,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ ir_CreditFacilityByDurationOfLineOfCreditAxis
= ir_FiveYearRevolvingCreditFacilityRefinancedMember		        
Four Year Revolving Credit Facility Member [Member]                    
Line of credit facility, maximum borrowing capacity   (1,000,000,000)us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ ir_CreditFacilityByDurationOfLineOfCreditAxis
= ir_FourYearRevolvingCreditFacilityMemberMember		                
Five Year Revolving Credit Facility [Member]                    
Line of credit facility, maximum borrowing capacity (1,000,000,000)us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ ir_CreditFacilityByDurationOfLineOfCreditAxis
= ir_FiveYearRevolvingCreditFacilityMember		         (1,000,000,000)us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ ir_CreditFacilityByDurationOfLineOfCreditAxis
= ir_FiveYearRevolvingCreditFacilityMember		        
Non-U.S. [Member]                    
Other available Non-US lines of credit, borrowing capacity 847,400,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= ir_NonUSMember		         847,400,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= ir_NonUSMember		        
Other available Non-US lines of credit, remaining borrowing capacity $ 610,200,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= ir_NonUSMember		         $ 610,200,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= ir_NonUSMember