Supplemental Balance Sheet Information (Details 2) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Operating Lease, Right-of-Use Asset		$ 821		$ 642
Cash and cash equivalents as presented in Condensed Consolidated Balance Sheets		1,110		605
Property, plant and equipment, gross		2,430		2,306
Accumulated depreciation and amortization		(1,201)		(1,136)
Property, plant and equipment, net		1,229		1,170
Other assets		1,361		1,313
Other Assets, Miscellaneous, Noncurrent		377		360
Payments to Acquire Investments		206	$ 0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		1,375	$ 836	768	$ 474
Prepaid Expenses and Other Current Assets [Member]
Restricted Cash and Cash Equivalents	[1]	230		138
Assets held for sale		10		25
Other Current Assets [Member]
Restricted Cash and Cash Equivalents	[2]	35		25
Fair Value, Recurring [Member] | GrubHub Inc. [Member] | Fair Value, Inputs, Level 1 [Member] | Other Current Assets [Member]
Equity Securities, FV-NI	[3]	0		137
Franchise Incentive [Member]
Other assets		$ 163		$ 174

[1] Restricted cash within Prepaid expenses and other current assets reflects Taco Bell Securitization interest reserves and the cash related to advertising cooperatives which we consolidate that can only be used to settle obligations of the respective cooperatives.

[2] Primarily trust accounts related to our self-insurance program.

[3] (a)    In the quarter ended September 30, 2020 we sold our entire investment in Grubhub, Inc. common stock and received proceeds of $206 million.