Supplemental Financial Information - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income	$ 223	$ 164	$ 224	$ 351	$ 257	$ 246	$ 611	$ 854
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in loss (earnings) of consolidated subsidiaries	0			0			0	0
Depreciation and amortization							139	139
Premiums paid and non-cash loss on early extinguishment of debt							0	4
Amortization of deferred financing costs and debt issuance discount	7			7			19	22
(Income) loss from equity method investments	18			(11)			36	(11)
(Gain) loss on remeasurement of foreign denominated transactions							54	(38)
Net (gains) losses on derivatives							14	(43)
Share-based compensation expense							55	56
Deferred income taxes							(120)	(16)
Other							23	1
Changes in current assets and liabilities, excluding acquisitions and dispositions:
Accounts and notes receivable							(83)	(7)
Increase (Decrease) in Prepaid Expense and Other Assets							(21)	(34)
Accounts and drafts payable							(110)	(15)
Other accrued liabilities and gift card liability							(12)	(85)
Tenant inducements paid to franchisees							(7)	(13)
Other long-term assets and liabilities							(5)	64
Net cash provided by operating activities							593	878
Cash flows from investing activities:
Payments for property and equipment							(71)	(32)
Net proceeds from disposal of assets, restaurant closures, and refranchisings							9	22
Settlement/sale of derivatives, net							29	17
Net cash (used for) provided by investing activities							(33)	7
Cash flows from financing activities:
Proceeds from revolving line of credit and long-term debt							1,585	750
Repayments of revolving line of credit, long-term debt and finance leases							(1,071)	(290)
Payment of financing costs							(10)	(13)
Distributions on Class A common and Partnership exchangeable units							(716)	(669)
Capital contribution from RBI							60	99
Distributions from subsidiaries							0	0
(Payments) proceeds from derivatives							(29)
(Payments) proceeds from derivatives								17
Other financing activities, net							(1)	0
Net cash used for financing activities							(182)	(106)
Effect of exchange rates on cash and cash equivalents							(7)	7
Increase (decrease) in cash and cash equivalents							371	786
Cash and cash equivalents at beginning of period			1,533			913	1,533	913
Cash and cash equivalents at end of period	1,904			1,699			1,904	1,699
Eliminations
Cash flows from operating activities:
Net income	(223)			(351)			(611)	(854)
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in loss (earnings) of consolidated subsidiaries	223			351			611	854
Depreciation and amortization							0	0
Premiums paid and non-cash loss on early extinguishment of debt								0
Amortization of deferred financing costs and debt issuance discount							0	0
(Income) loss from equity method investments	0			0			0	0
(Gain) loss on remeasurement of foreign denominated transactions							0	0
Net (gains) losses on derivatives							0	0
Share-based compensation expense							0	0
Deferred income taxes							0	0
Other							0	0
Changes in current assets and liabilities, excluding acquisitions and dispositions:
Accounts and notes receivable							0	0
Increase (Decrease) in Prepaid Expense and Other Assets							0	0
Accounts and drafts payable							0	0
Other accrued liabilities and gift card liability							0	0
Tenant inducements paid to franchisees							0	0
Other long-term assets and liabilities							0	0
Net cash provided by operating activities							0	0
Cash flows from investing activities:
Payments for property and equipment							0	0
Net proceeds from disposal of assets, restaurant closures, and refranchisings							0	0
Settlement/sale of derivatives, net							0	0
Net cash (used for) provided by investing activities							0	0
Cash flows from financing activities:
Proceeds from revolving line of credit and long-term debt							0	0
Repayments of revolving line of credit, long-term debt and finance leases							0	0
Payment of financing costs							0	0
Distributions on Class A common and Partnership exchangeable units							0	0
Capital contribution from RBI							0	0
Distributions from subsidiaries							0	0
(Payments) proceeds from derivatives							0
(Payments) proceeds from derivatives								0
Other financing activities, net							0
Net cash used for financing activities							0	0
Effect of exchange rates on cash and cash equivalents							0	0
Increase (decrease) in cash and cash equivalents							0	0
Cash and cash equivalents at beginning of period			0			0	0	0
Cash and cash equivalents at end of period	0			0			0	0
Consolidated Borrowers | Reportable Legal Entities
Cash flows from operating activities:
Net income	223			351			611	854
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in loss (earnings) of consolidated subsidiaries	0			0			0	0
Depreciation and amortization							139	139
Premiums paid and non-cash loss on early extinguishment of debt								4
Amortization of deferred financing costs and debt issuance discount							19	22
(Income) loss from equity method investments	18			(11)			36	(11)
(Gain) loss on remeasurement of foreign denominated transactions							54	(38)
Net (gains) losses on derivatives							14	(43)
Share-based compensation expense							55	56
Deferred income taxes							(120)	(16)
Other							23	1
Changes in current assets and liabilities, excluding acquisitions and dispositions:
Accounts and notes receivable							(83)	(7)
Increase (Decrease) in Prepaid Expense and Other Assets							(21)	(34)
Accounts and drafts payable							(110)	(15)
Other accrued liabilities and gift card liability							(12)	(85)
Tenant inducements paid to franchisees							(7)	(13)
Other long-term assets and liabilities							(5)	64
Net cash provided by operating activities							593	878
Cash flows from investing activities:
Payments for property and equipment							(71)	(32)
Net proceeds from disposal of assets, restaurant closures, and refranchisings							9	22
Settlement/sale of derivatives, net							29	17
Net cash (used for) provided by investing activities							(33)	7
Cash flows from financing activities:
Proceeds from revolving line of credit and long-term debt							1,585	750
Repayments of revolving line of credit, long-term debt and finance leases							(1,071)	(290)
Payment of financing costs							(10)	(13)
Distributions on Class A common and Partnership exchangeable units							0	0
Capital contribution from RBI							60	99
Distributions from subsidiaries							(716)	(669)
(Payments) proceeds from derivatives							(29)
(Payments) proceeds from derivatives								17
Other financing activities, net							(1)
Net cash used for financing activities							(182)	(106)
Effect of exchange rates on cash and cash equivalents							(7)	7
Increase (decrease) in cash and cash equivalents							371	786
Cash and cash equivalents at beginning of period			1,533			913	1,533	913
Cash and cash equivalents at end of period	1,904			1,699			1,904	1,699
RBILP | Reportable Legal Entities
Cash flows from operating activities:
Net income	223			351			611	854
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in loss (earnings) of consolidated subsidiaries	(223)			(351)			(611)	(854)
Depreciation and amortization							0	0
Premiums paid and non-cash loss on early extinguishment of debt								0
Amortization of deferred financing costs and debt issuance discount							0	0
(Income) loss from equity method investments	0			0			0	0
(Gain) loss on remeasurement of foreign denominated transactions							0	0
Net (gains) losses on derivatives							0	0
Share-based compensation expense							0	0
Deferred income taxes							0	0
Other							0	0
Changes in current assets and liabilities, excluding acquisitions and dispositions:
Accounts and notes receivable							0	0
Increase (Decrease) in Prepaid Expense and Other Assets							0	0
Accounts and drafts payable							0	0
Other accrued liabilities and gift card liability							0	0
Tenant inducements paid to franchisees							0	0
Other long-term assets and liabilities							0	0
Net cash provided by operating activities							0	0
Cash flows from investing activities:
Payments for property and equipment							0	0
Net proceeds from disposal of assets, restaurant closures, and refranchisings							0	0
Settlement/sale of derivatives, net							0	0
Net cash (used for) provided by investing activities							0	0
Cash flows from financing activities:
Proceeds from revolving line of credit and long-term debt							0	0
Repayments of revolving line of credit, long-term debt and finance leases							0	0
Payment of financing costs							0	0
Distributions on Class A common and Partnership exchangeable units							(716)	(669)
Capital contribution from RBI							0	0
Distributions from subsidiaries							716	669
(Payments) proceeds from derivatives							0
(Payments) proceeds from derivatives								0
Other financing activities, net							0
Net cash used for financing activities							0	0
Effect of exchange rates on cash and cash equivalents							0	0
Increase (decrease) in cash and cash equivalents							0	0
Cash and cash equivalents at beginning of period			$ 0			$ 0	0	0
Cash and cash equivalents at end of period	$ 0			$ 0			$ 0	$ 0