Debt Obligations Senior Unsecured Notes (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 20, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Aug. 21, 2019	Dec. 19, 2013	Sep. 17, 2012
Debt Instrument [Line Items]
Long-term Debt		$ 5,622
Long-term debt		$ 5,505	$ 3,270
Percentage of Note required outstanding		55.00%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed		109.136%
Gain (Loss) on Extinguishment of Debt		$ 42	20	$ 0
Deferred financing fees written off		5
Debt Premium Cost Incurred		15
Loss on redemption of debt - Deferred financing fees
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt		(5)
Loss on redemption of debt - Cash Redemption Premium
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt		$ (37)
At any time and from time to time, prior to April 15, 2024
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage		105.125%
5.750% Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Long-term Debt					$ 500
Debt instrument stated percentage					5.75%
Percentage of Principle Amount Notes Were Sold At					100.00%
Debt Instrument Redemption Price As Percentage of Principle Amount		100.00%
Long-term debt		$ 500	500
5.750% Senior Notes due 2027 [Member] | Twelve month period commencing on September 1, 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		102.875%
5.750% Senior Notes due 2027 [Member] | Twelve month period commencing on September 1, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		101.438%
5.750% Senior Notes due 2027 [Member] | Twelve month period commencing on September 1, 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		100.00%
6.125% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Long-term Debt					$ 500
Debt instrument stated percentage		6.125%			6.125%
Percentage of Principle Amount Notes Were Sold At					100.00%
Long-term debt		$ 500	500
6.125% Senior Notes due 2029 [Member] | Twelve month period commencing on September 1, 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		103.063%
6.125% Senior Notes due 2029 [Member] | Twelve Month Period Commencing September 1, 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		102.042%
6.125% Senior Notes due 2029 [Member] | Twelve month period commencing on September 1, 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		101.021%
6.125% Senior Notes due 2029 [Member] | Twelve month period commencing on September 1, 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		100.00%
5.000% Senior Notes due 2028
Debt Instrument [Line Items]
Debt instrument stated percentage		5.00%
Long-term debt		$ 650	$ 650
5.000% Senior Notes due 2028 | From time to time, prior to October 1, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	105.00%
5.000% Senior Notes due 2028 | Twelve Month Period Commencing October 1, 2023
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	102.50%
5.000% Senior Notes due 2028 | Twelve Month Period Commencing October 1, 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	101.25%
5.000% Senior Notes due 2028 | Twelve month period commencing on October 1, 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	100.00%
5.250% Senior Notes due 2030
Debt Instrument [Line Items]
Debt instrument stated percentage		5.25%	5.25%
Long-term debt		$ 450	$ 450
5.250% Senior Notes due 2030 | From time to time, prior to October 1, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	105.25%
5.250% Senior Notes due 2030 | Twelve month period commencing on October 1, 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	102.625%
5.250% Senior Notes due 2030 | Twelve Month Period Commencing October 1, 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	101.75%
5.250% Senior Notes due 2030 | Twelve Month Period Commencing October 1, 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	100.875%
5.250% Senior Notes due 2030 | Twelve Month Period Commencing October 1, 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	100.00%
5.000% and 5.250% Senior Notes
Debt Instrument [Line Items]
Percentage of Principle Amount Notes Were Sold At	100.00%
Aggregate principal amount of Notes required to remaing outstanding	0.55
Date of equity offering offering when paying unsecured debt	180 days
5.000% and 5.250% Senior Notes | From time to time, prior to October 1, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	40.00%
5.000% and 5.250% Senior Notes | Prior to October 1, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	100.00%
5.125% Senior Notes due 2029
Debt Instrument [Line Items]
Debt instrument stated percentage		5.125%
Long-term debt		$ 1,200	0
Maximum Redeemable Percentage		40.00%
5.125% Senior Notes due 2029 | Prior to April 15, 2025
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage		100.00%
5.125% Senior Notes due 2029 | On or after April 15; redeemed in 2024
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		102.563%
5.125% Senior Notes due 2029 | On or after April 15; redeemed in 2025
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		101.281%
5.125% Senior Notes due 2029 | On or after April 15; redeemed in 2025
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount		100.00%
8.125% Notes Due 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 400
Long-term debt		$ 0	$ 400
8.125% Notes Due 2025 [Member] | Guarantor Subsidiaries [Member] | NCR International, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument stated percentage		8.125%
5% Notes Due 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt							$ 600
Debt instrument stated percentage		5.00%
Debt Instrument, Redemption Price, Percentage		100.00%
5% Notes Due 2022 [Member] | Guarantor Subsidiaries [Member] | NCR International, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument stated percentage		5.00%
6.375% Notes due 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt						$ 700
Debt Instrument, Redemption Price, Percentage		102.125%
6.375% Notes due 2023 [Member] | Guarantor Subsidiaries [Member] | NCR International, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument stated percentage		6.375%