Segment Information - Revenue By Service and Product Solution (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenue from External Customer [Line Items]
Services	$ 402,305	$ 388,986	$ 1,196,079	$ 1,142,311
Products	307,614	320,336	955,519	843,550
Revenue, Net	709,919	709,322	2,151,598	1,985,861
Financial self-service [Member]
Revenue from External Customer [Line Items]
Services	293,694	288,176	889,216	837,969
Products	236,994	235,595	792,166	659,313
Revenue, Net	530,688	523,771	1,681,382	1,497,282
Security [Member]
Revenue from External Customer [Line Items]
Services	108,611	100,810	306,699	304,330
Products	45,879	42,601	126,692	130,445
Revenue, Net	154,490	143,411	433,391	434,775
Financial Self Service And Security [Member]
Revenue from External Customer [Line Items]
Revenue, Net	685,178	667,182	2,114,773	1,932,057
Election And Lottery Systems [Member]
Revenue from External Customer [Line Items]
Revenue, Net	$ 24,741	$ 42,140	$ 36,825	$ 53,804