Note 2. Lease Accounting Policy (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Operating Leased Assets [Line Items]
Operating Lease, Cost		$ 18	$ 55
Operating Lease, Payments			73
Operating Lease, Right-of-Use Asset		657	657
Capital Leases, Future Minimum Payments Due				$ 103
Capital Leases, Future Minimum Payments Due Thereafter				58
Operating Leases, Future Minimum Payments, Due Thereafter				384
Capital Leases, Future Minimum Payments Due in Five Years				8
Operating Leases, Future Minimum Payments, Due in Five Years				61
Capital Leases, Future Minimum Payments Due in Four Years				8
Operating Leases, Future Minimum Payments, Due in Four Years				71
Capital Leases, Future Minimum Payments Due in Three Years				9
Operating Leases, Future Minimum Payments, Due in Three Years				78
Capital Leases, Future Minimum Payments Due, Next Twelve Months				10
Finance Lease, Liability, Payments, Due Next Twelve Months		10	10
Operating Leases, Future Minimum Payments Due, Next Twelve Months		110	110	103
Finance Lease, Liability, Payments, Due Year Two		9	9
Operating Leases, Future Minimum Payments, Due in Rolling Year Two		101	101
Finance Lease, Liability, Payments, Due Year Three		9	9
Operating Leases, Future Minimum Payments, Due in Rolling Year Three		92	92
Capital Leases, Future Minimum Payments Due in Two Years				10
Operating Leases, Future Minimum Payments, Due in Two Years				89
Operating Leases, Future Minimum Payments Due		1,013	1,013	$ 786
Finance Lease, Liability, Payments, Due in Rolling Year Four		8	8
Operating Leases, Future Minimum Payments, Due in Rolling Year Four		83	83
Finance Lease, Liability, Payments, Due in Rolling Year Five		7	7
Operating Leases, Future Minimum Payments, Due in Rolling Year Five		79	79
Finance Lease, Liability, Payments, Due in Rolling after Year Five		54	54
Operating Leases, Future Minimum Payments, Due in Rolling after Year Five		548	548
Finance Lease, Liability, Payment, Due		97	97
Finance Lease, Interest Expense		(28)	(28)
Lessee, Operating Lease, Liability, Undiscounted Excess Amount		(291)	(291)
Finance Lease, Liability		69	69
Operating Lease, Liability		722	722
Finance Lease, Right-of-Use Asset		36	36
Lease Right of Use Asset	[1]	693	693
Operating Lease, Liability, Current		69	69
Finance Lease, Liability, Current		7	7
Operating Lease, Liability, Noncurrent		653	653
Finance Lease, Liability, Noncurrent		62	62
Total Lease Liability	[1]	$ 791	$ 791
Operating Lease, Weighted Average Remaining Lease Term		12 years 9 months 4 days	12 years 9 months 4 days
Finance Lease, Weighted Average Remaining Lease Term		12 years 7 months 2 days	12 years 7 months 2 days
Operating Lease, Weighted Average Discount Rate, Percent		5.50%	5.50%
Finance Lease, Weighted Average Discount Rate, Percent		6.10%	6.10%
Finance Lease, Interest Payment on Liability			$ 2
Finance Lease, Principal Payments			3
Finance Lease, Right-of-Use Asset, Amortization		$ 0	2
Finance Lease, Interest Expense		1	2
Lease, Cost		1	4
Sublease Income		(16)	(50)
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			67
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability			8
UNITED STATES
Operating Leased Assets [Line Items]
Operating Lease, Right-of-Use Asset		298	298
Operating Lease, Liability		$ 352	$ 352

[1] (a) U.S. operating lease right-of-use assets and liabilities totaled $298 million and $352 million, respectively, as of September 30, 2019 and primarily related to Taco Bell U.S.