Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Attributable to Parent [Abstract]

Schedule of Stockholders Equity [Table Text Block]

Changes in stockholders' equity in the three months endedMarch 31, 2018 were as follows:

in millions	NCR Stockholders' Equity			Non-Redeemable Noncontrolling Interests in Subsidiaries		Total Stockholders' Equity
Balance at December 31, 2017	$	719		$	3	$	722
Adoption of accounting standard updates	14			—		14
Balance at January 1, 2018	733			3		736
Net income	20			—		20
Other comprehensive income	15			—		15
Repurchases of Company common stock	(165		)	—		(165		)
Series A Convertible Preferred Stock dividends	(12		)	—		(12		)
Employee stock compensation expense	14			—		14
Tax witholdings related to vesting of stock based awards	(11		)	—		(11		)
Proceeds from employee stock plans	5			—		5
Balance at March 31, 2018	$	599		$	3	$	602