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Line Of Credit Facility, Amortization Rate

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Line of Credit Facility, Accordion Feature, Increase Limit

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Debt - Additional Information (Details)							1 Months Ended		12 Months Ended
Debt - Additional Information (Details)	Jul. 29, 2019 USD ($)	Jun. 24, 2019 USD ($)	Feb. 15, 2019 USD ($)	Feb. 06, 2019	Jan. 16, 2019 USD ($)	Sep. 26, 2018 USD ($)	Oct. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jul. 01, 2019 GBP (£)	Jul. 01, 2019 EUR (€)
Debt Instrument [Line Items]
Debt costs									$ 47,000,000	$ 14,000,000	$ 0
Accounts receivable from securitization									773,000,000
Borrowings with receivables used as collateral									$ 22,059,000,000
Senior notes
Debt Instrument [Line Items]
Debt instrument, face amount		$ 9,000,000,000.0						$ 2,000,000,000.0				£ 1,050,000,000.00	€ 1,500,000,000
Extinguishment of debt						$ 246,000,000
Interest rate increase in the event the Company's credit rating is downgraded below investment grade (as percent)								2.00%
Senior notes \| 2.75% senior notes due 2024
Debt Instrument [Line Items]
Carrying value of debt		$ 2,000,000,000.0
Interest rate, stated percentage		2.75%							2.75%
Borrowings with receivables used as collateral									$ 2,000,000,000	0
Senior notes \| 3.2% senior notes due 2026
Debt Instrument [Line Items]
Carrying value of debt		$ 2,000,000,000.0
Interest rate, stated percentage		3.20%							3.20%
Borrowings with receivables used as collateral									$ 2,000,000,000	0
Senior notes \| 3.5% senior notes due 2029
Debt Instrument [Line Items]
Carrying value of debt		$ 3,000,000,000.0
Interest rate, stated percentage		3.50%							3.50%
Borrowings with receivables used as collateral									$ 3,000,000,000	0
Senior notes \| 4.4% senior notes due 2049
Debt Instrument [Line Items]
Carrying value of debt		$ 2,000,000,000.0
Interest rate, stated percentage		4.40%							4.40%
Borrowings with receivables used as collateral									$ 2,000,000,000	0
Senior notes \| 0.375% senior notes due 2023
Debt Instrument [Line Items]
Carrying value of debt \| €													€ 500,000,000
Interest rate, stated percentage									3.75%			0.375%	0.375%
Borrowings with receivables used as collateral									$ 559,000,000	0
Senior notes \| 1.125% senior notes due 2027
Debt Instrument [Line Items]
Carrying value of debt \| €													€ 500,000,000
Interest rate, stated percentage									1.125%			1.125%	1.125%
Borrowings with receivables used as collateral									$ 559,000,000	0
Senior notes \| 1.625% senior notes due 2030
Debt Instrument [Line Items]
Carrying value of debt \| €													€ 500,000,000
Interest rate, stated percentage									1.625%			1.625%	1.625%
Borrowings with receivables used as collateral									$ 559,000,000	0
Senior notes \| 2.25% senior notes due 2025
Debt Instrument [Line Items]
Carrying value of debt \| £												£ 525,000,000
Interest rate, stated percentage									2.25%			2.25%	2.25%
Borrowings with receivables used as collateral									$ 687,000,000	0
Senior notes \| 3.0% senior notes due 2031
Debt Instrument [Line Items]
Carrying value of debt \| £												£ 525,000,000
Interest rate, stated percentage									3.00%			3.00%	3.00%
Borrowings with receivables used as collateral									$ 687,000,000	0
Senior notes \| 3.8% senior notes due 2023
Debt Instrument [Line Items]
Carrying value of debt								$ 1,000,000,000.0
Interest rate, stated percentage								3.80%	3.80%
Borrowings with receivables used as collateral									$ 1,000,000,000	1,000,000,000
Senior notes \| 4.2% senior notes due 2028
Debt Instrument [Line Items]
Carrying value of debt								$ 1,000,000,000.0
Interest rate, stated percentage								4.20%	4.20%
Borrowings with receivables used as collateral									$ 1,000,000,000	1,000,000,000
Senior notes \| 4.625% senior notes due 2020
Debt Instrument [Line Items]
Debt instrument, face amount								$ 450,000,000
Interest rate, stated percentage							4.625%	4.625%
Extinguishment of debt							$ 204,000,000
Loss on early debt extinguishment										14,000,000
Senior notes \| 2.7% senior notes due 2020
Debt Instrument [Line Items]
Interest rate, stated percentage								2.70%	2.70%
Borrowings with receivables used as collateral									$ 850,000,000	850,000,000
Senior notes \| 3.85% senior notes due 2025
Debt Instrument [Line Items]
Interest rate, stated percentage								3.85%	3.85%
Borrowings with receivables used as collateral									$ 900,000,000	900,000,000
Senior notes \| 4.75% senior notes due 2021
Debt Instrument [Line Items]
Interest rate, stated percentage								4.75%	4.75%
Borrowings with receivables used as collateral									$ 400,000,000	400,000,000
Senior notes \| 3.5% senior notes due 2022
Debt Instrument [Line Items]
Interest rate, stated percentage								3.50%	3.50%
Borrowings with receivables used as collateral									$ 700,000,000	700,000,000
Senior notes \| 2.9% senior notes due 2020
Debt Instrument [Line Items]
Interest rate, stated percentage									2.70%
Receivable securitized loan
Debt Instrument [Line Items]
Debt instrument, face amount									$ 500,000,000
Borrowings with receivables used as collateral									$ 500,000,000	0
Average interest rate (as a percent)									2.61%
Term loan facility
Debt Instrument [Line Items]
Repaid debt								$ 540,000,000
Term loan and senior notes
Debt Instrument [Line Items]
Debt issuance costs									$ 120,000,000	25,000,000
Revolving credit facility
Debt Instrument [Line Items]
Repaid debt								$ 1,100,000,000
Consolidated indebtedness to consolidated net earnings limit							3.5
Debt issuance costs									$ 7,000,000	5,000,000
Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 3,500,000,000
Extinguishment of debt		$ 790,000,000
Variable interest rate (as a percent)									2.68%
Revolving credit, increase limit			1,500,000,000
Borrowings with receivables used as collateral									$ 174,000,000	1,129,000,000
Term loan facility \| Line of Credit
Debt Instrument [Line Items]
Borrowings with receivables used as collateral									$ 3,950,000,000	$ 0
Term loan facility \| Line of Credit \| Senior Unsecured Term Loan Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 5,000,000,000.0
Variable interest rate (as a percent)									3.00%
Term loan facility \| Line of Credit \| Senior Unsecured Term Loan Facility, Loans With Three Year Maturity
Debt Instrument [Line Items]
Debt term			3 years
Maximum borrowing capacity			$ 1,500,000,000
Term loan facility \| Line of Credit \| Senior Unsecured Term Loan Facility, Loans With Five Year Maturity
Debt Instrument [Line Items]
Debt term			5 years
Maximum borrowing capacity			$ 3,500,000,000
Line of Credit \| Bridge Loan \| Senior Unsecured Bridge Term Loan Facility
Debt Instrument [Line Items]
Debt term					364 days
Maximum borrowing capacity					$ 17,000,000,000.0
Debt costs									$ 98,000,000
Foreign Line of Credit
Debt Instrument [Line Items]
Amounts outstanding on lines of credit									$ 150,000,000
Weighted average interest rate percentage									13.40%
Debt Instrument, Option, One \| Revolving credit facility
Debt Instrument [Line Items]
Consolidated indebtedness to consolidated net earnings limit				4
Debt Instrument, Option, Two \| Revolving credit facility
Debt Instrument [Line Items]
Consolidated indebtedness to consolidated net earnings limit				4.5
Foreign currency forward exchange contracts
Debt Instrument [Line Items]
Realized foreign currency transaction gains (losses)									$ 3,000,000
Foreign currency foreign exchange contracts - Euro and British pound denominated senior notes
Debt Instrument [Line Items]
Realized foreign currency transaction gains (losses)									69,000,000
Foreign currency foreign exchange contracts - Euro and British pound denominated cash
Debt Instrument [Line Items]
Realized foreign currency transaction gains (losses)									$ (19,000,000)
First Data
Debt Instrument [Line Items]
Repayment of First Data debt	$ 16,414,000,000
Debt Instrument, Amortization, Period One \| Term loan facility \| Line of Credit \| Senior Unsecured Term Loan Facility
Debt Instrument [Line Items]
Amortization rate (as a percent)			1.25%
Debt Instrument, Amortization, Period Two \| Term loan facility \| Line of Credit \| Senior Unsecured Term Loan Facility
Debt Instrument [Line Items]
Amortization rate (as a percent)			1.875%
Debt Instrument, Amortization, Period Three \| Term loan facility \| Line of Credit \| Senior Unsecured Term Loan Facility
Debt Instrument [Line Items]
Amortization rate (as a percent)			2.50%