Guarantor Financial Information (Condensed Consolidating Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 1,089.5	$ 1,160.7	$ 918.1	$ 1,014.3
Accounts and notes receivable, net	2,230.5	2,145.8
Inventories	1,432.6	1,282.0
Other current assets	615.2	594.1
Accounts and notes receivable affiliates	0	0
Total current assets	5,367.8	5,182.6
Investment in affiliates	0	0
Property, plant and equipment, net	1,640.1	1,640.6
Intangible assets, net	10,456.5	10,442.2
Other noncurrent assets	1,446.1	1,488.8
Total assets	18,910.5	18,754.2
Current liabilities:
Accounts payable and accruals	3,334.8	3,361.2
Short-term borrowings and current maturities of long-term debt	765.6	763.3
Accounts and note payable affiliates	0	0
Total current liabilities	4,100.4	4,124.5
Long-term debt	2,879.3	2,879.3
Note payable affiliate	0	0
Other noncurrent liabilities	4,631.7	4,734.7
Total liabilities	11,611.4	11,738.5
Temporary equity	0.6	3.3
Equity:
Total equity	7,298.5	7,012.4	8,205.7	8,059.1
Total liabilities and equity	18,910.5	18,754.2
IR Ireland [Member]
Current assets:
Cash and cash equivalents	0	0	0.6	0.4
Accounts and notes receivable, net	0	0
Inventories	0	0
Other current assets	0.3	0.1
Accounts and notes receivable affiliates	111.3	137.5
Total current assets	111.6	137.6
Investment in affiliates	8,454.4	8,179.9
Property, plant and equipment, net	0.1	0.1
Intangible assets, net	0	0
Other noncurrent assets	0	0
Total assets	8,566.1	8,317.6
Current liabilities:
Accounts payable and accruals	6.2	51.7
Short-term borrowings and current maturities of long-term debt	0	0
Accounts and note payable affiliates	1,260.8	1,250.2
Total current liabilities	1,267.0	1,301.9
Long-term debt	0	0
Note payable affiliate	0	0
Other noncurrent liabilities	0	0
Total liabilities	1,267.0	1,301.9
Temporary equity	0.6	3.3
Equity:
Total equity	7,298.5	7,012.4
Total liabilities and equity	8,566.1	8,317.6
IR Limited [Member]
Current assets:
Cash and cash equivalents	0	0	0	0
Accounts and notes receivable, net	0	0
Inventories	0	0
Other current assets	0	0
Accounts and notes receivable affiliates	3,013.3	3,013.3
Total current assets	3,013.3	3,013.3
Investment in affiliates	6,319.4	6,254.6
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Other noncurrent assets	0	0
Total assets	9,332.7	9,267.9
Current liabilities:
Accounts payable and accruals	0	0
Short-term borrowings and current maturities of long-term debt	0	0
Accounts and note payable affiliates	41.8	40.3
Total current liabilities	41.8	40.3
Long-term debt	0	0
Note payable affiliate	0	0
Other noncurrent liabilities	0	0
Total liabilities	41.8	40.3
Temporary equity	0	0
Equity:
Total equity	9,290.9	9,227.6
Total liabilities and equity	9,332.7	9,267.9
IR International [Member]
Current assets:
Cash and cash equivalents	0	0	0	12.0
Accounts and notes receivable, net	0	0
Inventories	0	0
Other current assets	3.8	0.1
Accounts and notes receivable affiliates	17.0	17.0
Total current assets	20.8	17.1
Investment in affiliates	20,212.5	20,265.3
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Other noncurrent assets	0.6	0.7
Total assets	20,233.9	20,283.1
Current liabilities:
Accounts payable and accruals	7.5	3.9
Short-term borrowings and current maturities of long-term debt	0	0
Accounts and note payable affiliates	4,827.6	4,812.5
Total current liabilities	4,835.1	4,816.4
Long-term debt	299.6	299.6
Note payable affiliate	10,789.4	10,789.4
Other noncurrent liabilities	3.8	3.8
Total liabilities	15,927.9	15,909.2
Temporary equity	0	0
Equity:
Total equity	4,306.0	4,373.9
Total liabilities and equity	20,233.9	20,283.1
IR Global Holding [Member]
Current assets:
Cash and cash equivalents	120.8	241.8	81.3	99.9
Accounts and notes receivable, net	0	0
Inventories	0	0
Other current assets	0.1	0.5
Accounts and notes receivable affiliates	2,342.1	2,465.4
Total current assets	2,463.0	2,707.7
Investment in affiliates	17,651.9	17,420.3
Property, plant and equipment, net	0.1	0.2
Intangible assets, net	0	0
Other noncurrent assets	12.9	12.7
Total assets	20,127.9	20,140.9
Current liabilities:
Accounts payable and accruals	47.5	50.8
Short-term borrowings and current maturities of long-term debt	786.5	581.0
Accounts and note payable affiliates	7,187.5	7,352.8
Total current liabilities	8,021.5	7,984.6
Long-term debt	2,004.2	2,004.2
Note payable affiliate	0	0
Other noncurrent liabilities	0	0
Total liabilities	10,025.7	9,988.8
Temporary equity	0	0
Equity:
Total equity	10,102.2	10,152.1
Total liabilities and equity	20,127.9	20,140.9
IR New Jersey [Member]
Current assets:
Cash and cash equivalents	203.0	77.8	127.9	135.5
Accounts and notes receivable, net	159.8	166.7
Inventories	83.4	73.3
Other current assets	179.2	176.0
Accounts and notes receivable affiliates	6,385.6	4,829.9
Total current assets	7,011.0	5,323.7
Investment in affiliates	8,018.1	7,922.5
Property, plant and equipment, net	221.2	217.0
Intangible assets, net	83.9	83.9
Other noncurrent assets	912.3	906.4
Total assets	16,246.5	14,453.5
Current liabilities:
Accounts payable and accruals	423.4	433.1
Short-term borrowings and current maturities of long-term debt	351.9	351.9
Accounts and note payable affiliates	11,163.3	9,455.3
Total current liabilities	11,938.6	10,240.3
Long-term debt	372.6	372.6
Note payable affiliate	0	0
Other noncurrent liabilities	1,839.1	1,894.4
Total liabilities	14,150.3	12,507.3
Temporary equity	0	0
Equity:
Total equity	2,096.2	1,946.2
Total liabilities and equity	16,246.5	14,453.5
Other Subsidiaries [Member]
Current assets:
Cash and cash equivalents	765.7	841.1	708.3	766.5
Accounts and notes receivable, net	2,070.7	1,979.1
Inventories	1,349.2	1,208.7
Other current assets	431.8	417.4
Accounts and notes receivable affiliates	21,307.8	21,001.7
Total current assets	25,925.2	25,448.0
Investment in affiliates	85,434.2	84,841.3
Property, plant and equipment, net	1,418.7	1,423.3
Intangible assets, net	10,372.6	10,358.3
Other noncurrent assets	520.3	569.0
Total assets	123,671.0	122,639.9
Current liabilities:
Accounts payable and accruals	2,850.2	2,821.7
Short-term borrowings and current maturities of long-term debt	69.7	70.2
Accounts and note payable affiliates	8,341.4	8,140.2
Total current liabilities	11,261.3	11,032.1
Long-term debt	202.9	202.9
Note payable affiliate	0	0
Other noncurrent liabilities	2,788.8	2,836.5
Total liabilities	14,253.0	14,071.5
Temporary equity	0	0
Equity:
Total equity	109,418.0	108,568.4
Total liabilities and equity	123,671.0	122,639.9
Consolidating Adjustments [Member]
Current assets:
Cash and cash equivalents	0	0
Accounts and notes receivable, net	0	0
Inventories	0	0
Other current assets	0	0
Accounts and notes receivable affiliates	(33,177.1)	(31,464.8)
Total current assets	(33,177.1)	(31,464.8)
Investment in affiliates	(146,090.5)	(144,883.9)
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Other noncurrent assets	0	0
Total assets	(179,267.6)	(176,348.7)
Current liabilities:
Accounts payable and accruals	0	0
Short-term borrowings and current maturities of long-term debt	(442.5)	(239.8)
Accounts and note payable affiliates	(32,822.4)	(31,051.3)
Total current liabilities	(33,264.9)	(31,291.1)
Long-term debt	0	0
Note payable affiliate	(10,789.4)	(10,789.4)
Other noncurrent liabilities	0	0
Total liabilities	(44,054.3)	(42,080.5)
Temporary equity	0	0
Equity:
Total equity	(135,213.3)	(134,268.2)
Total liabilities and equity	$ (179,267.6)	$ (176,348.7)