Shareholders' Equity (Notes)

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Attributable to Parent [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

11. STOCKHOLDER'S EQUITY

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

During the three months endedMarch 31, 2018, the Company repurchased 4.7 million shares of its common stock for $165 million. Upon repurchase, the shares were retired. Refer to Note 1. Basis of Presentation and Summary of Significant Accounting Policies for further discussion of the adoption of accounting standard updates.