Acquisitions and divestitures.

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Acquisitions and divestitures.

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Business Acquisition Purchase Price Allocation Intangible Assets.

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Amount of cash paid to acquire the entity.

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The amount of acquisition cost of a business combination allocated to the noncurrent portion of the long-term debt assumed from the acquired entity.

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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This element represents the overall income (loss) from a disposal group apportioned to the parent that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Acquisitions & Divestitures (Details) (USD $)	3 Months Ended	9 Months Ended
Acquisitions & Divestitures (Details) (USD $)	Sep. 30, 2010	Sep. 30, 2010	Apr. 30, 2010 PMA [Member]	Apr. 30, 2010 PMA [Member] Electrical [Member]	Jun. 30, 2011 AmbiRad [Member]	Jun. 30, 2011 AmbiRad [Member] HVAC [Member]	Jan. 31, 2010 JT Packard [Member]	Jan. 31, 2010 JT Packard [Member] Electrical [Member]
Acquisitions And Divestitures (Textual) [Abstract]
Approximate purchase price of acquisition			$ 114,000,000		$ 30,000,000		$ 21,000,000
Approximate purchase price consisted of cash			78,000,000
Approximate debt assumed			36,000,000
Approximate purchase price allocation resulted in goodwill				33,000,000		7,000,000		6,000,000
Approximate purchase price allocation resulted in other intangible assets				60,000,000		19,000,000		11,000,000
Acquisitions and Divestitures (Additional Textual) [Abstract]
Net sales due to Discontinued operations approximately	15,000,000	45,000,000
Earnings before income taxes due to Discontinued operations approximately	2,300,000	6,900,000
Net earning from the divested communications product business	$ 1,510,000	$ 4,554,000