Leases (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments			$ 71	$ 105
Operating Leases, Rent Expense			151	$ 214
Operating Lease, Right-of-Use Asset	[1]	$ 642	0
Operating Lease, Payments		104
Operating Lease, Cost		115
Finance Lease, Right-of-Use Asset, Amortization		3
Finance Lease, Interest Expense		3
Finance Lease Cost		6
Sublease Income		(69)
Finance Lease, Interest Payment on Liability		3
Finance Lease, Principal Payments		4
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		79
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability		14
Finance Lease, Right-of-Use Asset		42
Lease Right of Use Asset	[2]	684
Operating Lease, Liability, Current		67	0
Finance Lease, Liability, Current		7
Operating Lease, Liability, Noncurrent		640
Finance Lease, Liability, Noncurrent		70
Total Lease Liability	[2]	$ 784
Operating Lease, Weighted Average Remaining Lease Term		12 years 3 months 19 days
Operating Lease, Weighted Average Discount Rate, Percent		5.60%
Finance Lease, Weighted Average Discount Rate, Percent		6.60%
Operating Lease, Liability		$ 707
Finance Lease, Liability, Undiscounted Excess Amount		(33)
Lessee, Operating Lease, Liability, Undiscounted Excess Amount		(280)
Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount		(18)
Finance Lease, Liability		$ 77
Finance Lease, Weighted Average Remaining Lease Term		12 years 8 months 15 days
Capital Leases, Net Investment in Direct Financing Leases, Deferred Income			19
Sales-type and Direct Financing Leases, Lease Receivable		$ 48	52
Operating Leases, Future Minimum Payments Receivable		964	1,016
Operating Leases, Future Minimum Payments Receivable		46
Capital Leases, Net Investment in Direct Financing Leases, Minimum Payments to be Received		30
Capital leases, future minimum commitments [Abstract]
2016		11	10
2017		11	10
2018		9	9
2019		9	8
2020		8	8
Thereafter		62	58
Capital leases, total future minimum commitments		110	103
Operating leases, future minimum commitments [Abstract]
2016		105	103
2017		100	89
2018		92	78
2019		83	71
2020		76	61
Thereafter		531	384
Operating leases, total future minimum commitments		987	786
Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, after Rolling Year Five		28	30
Lessor, Operating Lease, Payments to be Received, Thereafter		601	638
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years		3	3
Lessor, Operating Lease, Payments to be Received, Five Years		65	67
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years		4	4
Lessor, Operating Lease, Payments to be Received, Four Years		69	69
Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, Rolling Year Three		4	4
Lessor, Operating Lease, Payments to be Received, Three Years		72	74
Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, Rolling Year Two		4	5
Direct Financing Lease, Lease Receivable		5	6
Lessor, Operating Lease, Payments to be Received, Next Twelve Months		81	89
Operating Leases, Future Minimum Payments Receivable, in Two Years		76	$ 79
United States
Operating Lease, Right-of-Use Asset		283
Operating Lease, Liability		$ 337

[1] (b) Increase from 2018 primarily due to the adoption of Topic 842 beginning with the year ended December 31, 2019. See Notes 2 and 4 for further discussion.

[2] (a) U.S. operating lease right-of-use assets and liabilities totaled $283 million and $337 million, respectively, as of December 31, 2019. These amounts primarily related to Taco Bell U.S.