Acquisition	6 Months Ended
Mar. 31, 2012
Business Combinations [Abstract]
Acquisition	Acquisitions In March 2012, we acquired certain assets and assumed certain liabilities of SoftSwitching Technologies Corporation (SoftSwitching), an industrial power quality detection and protection systems provider in the United States. The fair value and weighted average useful life that have been assigned to the acquired technology intangible assets of this acquisition are $3.2 million and 10 years, respectively. We recorded no goodwill associated with this acquisition. In May 2011, we purchased a majority stake in the equity of Lektronix Limited and its affiliate (Lektronix), an independent industrial automation repairs and service provider in Europe and Asia. With respect to the remaining minority shares, the terms of this acquisition included mirroring put and call options for a fixed price in December 2011. Accordingly, we recorded the Lektronix share purchase as an acquisition of all outstanding equity interests with a corresponding liability of $10.9 million related to the put/call option as of the acquisition date. We exercised the option and paid for the remaining minority shares during the quarter ended December 31, 2011. The results of operations of the acquired businesses have been included in our Condensed Consolidated Statement of Operations since the dates of acquisition. Pro forma financial information and allocation of the purchase price are not presented as the effects of these acquisitions are not material to our results of operations or financial position.

Acquisition

6 Months Ended

Mar. 31, 2012

Acquisitions

In March 2012, we acquired certain assets and assumed certain liabilities of SoftSwitching Technologies Corporation (SoftSwitching), an industrial power quality detection and protection systems provider in the United States. The fair value and weighted average useful life that have been assigned to the acquired technology intangible assets of this acquisition are $3.2 million and 10 years, respectively. We recorded no goodwill associated with this acquisition.

In May 2011, we purchased a majority stake in the equity of Lektronix Limited and its affiliate (Lektronix), an independent industrial automation repairs and service provider in Europe and Asia. With respect to the remaining minority shares, the terms of this acquisition included mirroring put and call options for a fixed price in December 2011. Accordingly, we recorded the Lektronix share purchase as an acquisition of all outstanding equity interests with a corresponding liability of $10.9 million related to the put/call option as of the acquisition date. We exercised the option and paid for the remaining minority shares during the quarter ended December 31, 2011.

The results of operations of the acquired businesses have been included in our Condensed Consolidated Statement of Operations since the dates of acquisition. Pro forma financial information and allocation of the purchase price are not presented as the effects of these acquisitions are not material to our results of operations or financial position.