Intangible Assets Schedule of Intangilbe Assets (Tables)

12 Months Ended

Dec. 31, 2011

Finite-Lived Intangible Assets [Abstract]

Schedule of Intangible Assets by Major Class [Table Text Block]

The gross carrying amount and accumulated amortization of our intangible assets, other than goodwill, are as follows:

	December 31, 2011							December 31, 2010
	Gross Assets		Accumulated Amortization			Net		Gross Assets		Accumulated Amortization			Net
	(in thousands)
Core-developed technology	$	387,606	$	(305,285	)	$	82,321	$	378,705	$	(274,198	)	$	104,507
Customer contracts and relationships	278,581		(131,418		)	147,163		282,997		(110,539		)	172,458
Trademarks and trade names	71,854		(62,206		)	9,648		73,194		(59,235		)	13,959
Other	11,153		(10,785		)	368		24,256		(23,510		)	746
Total intangible assets	$	749,194	$	(509,694	)	$	239,500	$	759,152	$	(467,482	)	$	291,670

Summary of Intangible Asset Account Activity [Table Text Block]

A summary of the intangible asset account activity is as follows:

	Year Ended December 31,
	2011			2010
	(in thousands)
Beginning balance, intangible assets, gross	$	759,152		$	806,256
Intangible assets acquired	12,797			—
Assets transferred to held for sale	(4,964		)	—
Assets no longer in use written-off	(8,450		)	—
Effect of change in exchange rates	(9,341		)	(47,104		)
Ending balance, intangible assets, gross	$	749,194		$	759,152

Intangible assets held for sale are classified within other current assets, are reported at the lower of carrying value or fair value less costs to sell, and are no longer amortized. As of December 31, 2011, due to the expected sale of certain operations of the Water operating segment, the net carrying value of intangible assets totaling $2.6 million was transferred from intangible assets to other current assets. Refer to Note 13 for additional disclosure on held for sale assets.

During 2011, certain assets that had been fully amo

Schedule of Intangible Assets, Future Amortization Expense [Table Text Block]

Estimated future annual amortization expense is as follows:

Years ending December 31,	Estimated Annual Amortization
	(in thousands)
2012	$	46,399
2013	38,213
2014	30,853
2015	25,442
2016	20,916
Beyond 2016	77,677
Total intangible assets, net	$	239,500