Guarantor Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) (USD $) In Millions	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Net cash provided by (used in) continuing operating activities	$ 342.8	$ 273.8
Net cash provided by (used in) discontinued operating activities	(10.3)	(15.0)
Capital expenditures	(78.8)	(68.2)
Proceeds from sale of property, plant and equipment	34.8	1.1
Acquisitions, net of cash	(2.0)	(5.5)
Proceeds from business disposition, net of cash	0	0
Other, net	0	0
Net cash provided by (used in) continuing investing activities	(46.0)	(72.6)
Net cash provided by (used in) discontinued investing activities	42.9	(0.2)
Net change in debt	(56.4)	(218.6)
Debt issuance costs	(2.4)	(5.5)
Net inter-company proceeds (payments)	0	0
Dividends paid to noncontrolling interests	(18.3)	(8.4)
Dividends (paid) received	(63.1)	(45.0)
Proceeds from shares issued under incentive plans	101.9	37.1
Repurchase of ordinary shares	(56.0)	0
Other, net	(1.5)	0
Net cash provided by (used in) continuing financing activities	(95.8)	(240.4)
Net cash provided by (used in) discontinued financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	11.9	(0.7)
Net increase (decrease) in cash and cash equivalents	245.5	(55.1)
Cash and cash equivalents - beginning of period	1,014.3	876.7
Cash and cash equivalents - end of period	1,259.8	821.6
IR Ireland [Member]
Net cash provided by (used in) continuing operating activities	(4.2)	(5.6)
Net cash provided by (used in) discontinued operating activities	0	0
Capital expenditures	0	0
Proceeds from sale of property, plant and equipment	0	0
Acquisitions, net of cash	0	0
Proceeds from business disposition, net of cash	0	0
Other, net	0	0
Net cash provided by (used in) continuing investing activities	0	0
Net cash provided by (used in) discontinued investing activities	0	0
Net change in debt	0	0
Debt issuance costs	0	0
Net inter-company proceeds (payments)	21.5	13.8
Dividends paid to noncontrolling interests	0	0
Dividends (paid) received	(63.1)	(45.0)
Proceeds from shares issued under incentive plans	101.9	37.1
Repurchase of ordinary shares	(56.0)
Other, net	(0.5)	0
Net cash provided by (used in) continuing financing activities	3.8	5.9
Net cash provided by (used in) discontinued financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	(0.4)	0.3
Cash and cash equivalents - beginning of period	0.4	0.6
Cash and cash equivalents - end of period	0	0.9
IR Limited [Member]
Net cash provided by (used in) continuing operating activities	(0.1)	0.2
Net cash provided by (used in) discontinued operating activities	0	0
Capital expenditures	0	0
Proceeds from sale of property, plant and equipment	0	0
Acquisitions, net of cash	0	0
Proceeds from business disposition, net of cash	0	0
Other, net	0	0
Net cash provided by (used in) continuing investing activities	0	0
Net cash provided by (used in) discontinued investing activities	0	0
Net change in debt	0	0
Debt issuance costs	0	0
Net inter-company proceeds (payments)	0.1	(0.2)
Dividends paid to noncontrolling interests	0	0
Dividends (paid) received	0	0
Proceeds from shares issued under incentive plans	0	0
Repurchase of ordinary shares	0
Other, net	0	0
Net cash provided by (used in) continuing financing activities	0.1	(0.2)
Net cash provided by (used in) discontinued financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents - beginning of period	0	0
Cash and cash equivalents - end of period	0	0
IR International [Member]
Net cash provided by (used in) continuing operating activities	(6.8)	(7.2)
Net cash provided by (used in) discontinued operating activities	0	0
Capital expenditures	0	0
Proceeds from sale of property, plant and equipment	0	0
Acquisitions, net of cash	0	0
Proceeds from business disposition, net of cash	0	0
Other, net	0	0
Net cash provided by (used in) continuing investing activities	0	0
Net cash provided by (used in) discontinued investing activities	0	0
Net change in debt	0	0
Debt issuance costs	0	0
Net inter-company proceeds (payments)	(5.2)	10.5
Dividends paid to noncontrolling interests	0	0
Dividends (paid) received	0	0
Proceeds from shares issued under incentive plans	0	0
Repurchase of ordinary shares	0
Other, net	0	0
Net cash provided by (used in) continuing financing activities	(5.2)	10.5
Net cash provided by (used in) discontinued financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	(12.0)	3.3
Cash and cash equivalents - beginning of period	12.0	0
Cash and cash equivalents - end of period	0	3.3
IR Global Holding [Member]
Net cash provided by (used in) continuing operating activities	(96.4)	(77.4)
Net cash provided by (used in) discontinued operating activities	0	0
Capital expenditures	0	0
Proceeds from sale of property, plant and equipment	0	0
Acquisitions, net of cash	0	0
Proceeds from business disposition, net of cash	0	0
Other, net	0	0
Net cash provided by (used in) continuing investing activities	0	0
Net cash provided by (used in) discontinued investing activities	0	0
Net change in debt	(0.2)	0.1
Debt issuance costs	(2.4)	(5.5)
Net inter-company proceeds (payments)	191.9	38.0
Dividends paid to noncontrolling interests	0	0
Dividends (paid) received	0	0
Proceeds from shares issued under incentive plans	0	0
Repurchase of ordinary shares	0
Other, net	0	0
Net cash provided by (used in) continuing financing activities	189.3	32.6
Net cash provided by (used in) discontinued financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	92.9	(44.8)
Cash and cash equivalents - beginning of period	99.9	81.8
Cash and cash equivalents - end of period	192.8	37.0
IR New Jersey [Member]
Net cash provided by (used in) continuing operating activities	51.3	(153.8)
Net cash provided by (used in) discontinued operating activities	(17.9)	(5.1)
Capital expenditures	(14.9)	(13.5)
Proceeds from sale of property, plant and equipment	1.6	0
Acquisitions, net of cash	0	0
Proceeds from business disposition, net of cash	0	0
Other, net	0	0
Net cash provided by (used in) continuing investing activities	(13.3)	(13.5)
Net cash provided by (used in) discontinued investing activities	0	0
Net change in debt	(7.6)	(7.8)
Debt issuance costs	0	0
Net inter-company proceeds (payments)	97.5	171.7
Dividends paid to noncontrolling interests	0	0
Dividends (paid) received	0	0
Proceeds from shares issued under incentive plans	0	0
Repurchase of ordinary shares	0
Other, net	0	0
Net cash provided by (used in) continuing financing activities	89.9	163.9
Net cash provided by (used in) discontinued financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	110.0	(8.5)
Cash and cash equivalents - beginning of period	135.5	175.5
Cash and cash equivalents - end of period	245.5	167.0
Other Subsidiaries [Member]
Net cash provided by (used in) continuing operating activities	399.0	517.6
Net cash provided by (used in) discontinued operating activities	7.6	(9.9)
Capital expenditures	(63.9)	(54.7)
Proceeds from sale of property, plant and equipment	33.2	1.1
Acquisitions, net of cash	(2.0)	(5.5)
Proceeds from business disposition, net of cash	0	0
Other, net	0	0
Net cash provided by (used in) continuing investing activities	(32.7)	(59.1)
Net cash provided by (used in) discontinued investing activities	42.9	(0.2)
Net change in debt	(48.6)	(210.9)
Debt issuance costs	0	0
Net inter-company proceeds (payments)	(305.8)	(233.8)
Dividends paid to noncontrolling interests	(18.3)	(8.4)
Dividends (paid) received	0	0
Proceeds from shares issued under incentive plans	0	0
Repurchase of ordinary shares	0
Other, net	(1.0)	0
Net cash provided by (used in) continuing financing activities	(373.7)	(453.1)
Net cash provided by (used in) discontinued financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	11.9	(0.7)
Net increase (decrease) in cash and cash equivalents	55.0	(5.4)
Cash and cash equivalents - beginning of period	766.5	618.8
Cash and cash equivalents - end of period	$ 821.5	$ 613.4

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).

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The increase (decrease) during the reporting period in cash and cash equivalents. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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The effect of exchange rate changes on cash balances held in foreign currencies.

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The net cash from (used in) the entity's financing activities specifically EXCLUDING the cash flows derived by the entity from its discontinued operations, if any. This element is only to be used when the entity reports its cash flows attributable to discontinued operations separately from the cash flow provided by or used in financing activities. Such reporting would necessitate the entity to use the Net Cash provided by or used in Discontinued Operations, Total element provided in the taxonomy.

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The net cash from (used in) the entity's investing activities specifically EXCLUDING the cash flows derived by the entity from its discontinued operations, if any. This element is only to be used when the entity reports its cash flows attributable to discontinued operations separately from the cash flow provided by or used in investing activities. Such reporting would necessitate the entity to use the Net Cash provided by or used in Discontinued Operations, Total element provided in the taxonomy.

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The net cash from (used in) the entity's continuing operations. This element specifically EXCLUDES the cash flows derived by the entity from its discontinued operations, if any. This element is only to be used when the entity reports its cash flows attributable to discontinued operations separately from the cash flow provided by or used in operating activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash outflow to reacquire common stock during the period.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders.

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The cash outflow for the return on capital for noncontrolled interest in the entity.

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- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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-Name Accounting Standards Codification
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- Definition

This element represents the cash inflow during the period from the sale of a component of the entity.

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The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The net cash inflow or outflow in aggregate debt due to repayments and proceeds from additional borrowings.

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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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