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Percentage of voting equity interests acquired in the business combination.

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The foreign exchange rate used to translate amounts denominated in the functional currency to the reporting currency.

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Acquisitions (Details)	1 Months Ended	9 Months Ended
Acquisitions (Details)	May 31, 2010 Delta, plc. GBP (£)	Sep. 25, 2010 Delta, plc. USD ($)	May 12, 2010 Delta, plc. USD ($)	May 12, 2010 Delta, plc. GBP (£)	May 12, 2010 Delta, plc. Minimum employee	Jun. 24, 2011 Donhad USD ($)	Jun. 01, 2011 Irrigation monitoring services company USD ($)
Acquisition
Price paid per share in cash (in pence per share)	£ 185
Cash paid for acquisition			$ 436,736,000	£ 284,463,000		$ 25,253,000	$ 1,539,000
Average exchange rate (in dollars per pound)			1.5353
Number of employees					2,500
Pro forma results of operations
Net sales		1,569,210,000
Net earnings		$ 64,512,000
Earnings per share-diluted (in dollars per share)		$ 2.49
Ownership percentage acquired (as a percent)						40.00%	60.00%