Other (Income) Expense (Details) - USD ($) $ in Millions		3 Months Ended					6 Months Ended
		Jun. 30, 2021		Sep. 30, 2020	Jun. 30, 2020		Jun. 30, 2021	Jun. 30, 2020
Other Income and Expenses [Line Items]
Foreign exchange net (gain) loss and other		$ (4)	[1]		$ (8)	[1]	$ (11)	$ 4
Impairment and closure expense	[2]	0			6		1	146
Other (income) expense		$ (4)			(2)		(10)	150
Gain (Loss) on Sale of Properties							$ 6
Goodwill [Member]
Other Income and Expenses [Line Items]
Impairment expense				$ 5				139
Other Intangible Assets [Member]
Other Income and Expenses [Line Items]
Impairment expense					$ 6			$ 6

[1] The year to date ended June 30, 2021, includes a gain of $6 million associated with the sale of property.

[2] The year to date ended June 30, 2020, includes a charge of $139 million related to the impairment of Habit Burger Grill goodwill. See Note 2. The quarter and year to date ended June 30, 2020 also includes a charge of $6 million related to the write-off of software no longer being used.