Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income (loss)	$ 100	$ 88	$ 250	$ 241
Currency translation adjustments
Currency translation adjustments	7	18	(49)	4
Derivatives
Unrealized (loss) gain on derivatives	(3)	(8)	3	(14)
Losses on derivatives arising during the period	1	0	4	0
Less income tax benefit (expense)	0	2	(3)	4
Securities
Unrealized (loss) gain on securities	0	0	3	0
Less income tax benefit	(1)	0	(1)	0
Employee benefit plans
New prior service cost	(3)	0	(3)	0
Amortization of prior service benefit	(5)	(2)	(27)	(12)
Net new actuarial (loss) gain	(12)	(6)	36	(6)
Actuarial loss included in benefits expense	3	2	6	10
Less income tax benefit (expense)	1	1	(9)	3
Net current period other comprehensive income	(12)	7	(40)	(11)
Total comprehensive income	88	95	210	230
Less comprehensive income attributable to noncontrolling interests:
Net income attributable to noncontrolling interests	2	1	5	2
Currency translation adjustments	(1)	0	(4)	(1)
Amounts attributable to noncontrolling interests	1	1	1	1
Comprehensive income attributable to NCR common stockholders	$ 87	$ 94	$ 209	$ 229