Intangible Assets by Major Asset Class (Detail) (USD $) In Millions, unless otherwise specified			9 Months Ended
Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Acquired technologies Year	Sep. 30, 2011 Trade Names	Sep. 30, 2011 Trademarks and patents Year	Sep. 30, 2011 Technical qualifications, plans and drawings Year	Sep. 30, 2011 Replacement parts annuity and product approvals Year	Sep. 30, 2011 Customer contracts and relationships Year	Sep. 30, 2011 Covenants not to compete and other identified intangibles Year
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (Years), Minimum			9		5	18	5	8	5
Useful life (Years), Maximum			34		20	30	30	30	30
Useful life (Years)				indefinite
Original Cost	$ 560.6		$ 121.4	$ 17.9	$ 30.2	$ 30.5	$ 39.7	$ 315.2	$ 5.7
Accumulated Amortization	173.7		45.5		20.9	24.8	35.8	41.2	5.5
Net Book Value	$ 386.9	$ 390.5	$ 75.9	$ 17.9	$ 9.3	$ 5.7	$ 3.9	$ 274.0	$ 0.2

Intangible Assets, Estimated Useful Lives

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

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Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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The maximum useful life of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The minimum useful life of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company.

+ References

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

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