Supplemental Financial Information (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Supplemental Financial Information [Abstract]
Trade	$ 499	$ 408
Other	8	3
Accounts receivable, gross	507	411
Less: allowance for doubtful accounts	(13)	(9)
Total accounts receivable, net	494	402
Finished goods	41	39
Service parts	20	26
Total inventories	61	65
Current deferred tax assets	34	31
Other	51	25
Total other current assets	85	56
Land	8	8
Buildings and improvements	64	63
Machinery and other equipment	230	213
Property and equipment, gross	302	284
Less: accumulated depreciation	(182)	(179)
Total property and equipment, net	120	105
Sales and value-added taxes	23	19
Other	67	51
Total other current liabilities	90	70
Currency translation adjustments	25	31
Actuarial losses and prior service costs on employee benefit plans	(9)	(19)
Total accumulated other comprehensive income	$ 16	$ 12