Supplemental Financial Information - Condensed Consolidating Statements of Cash Flows (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income (loss)	$ 243.5	$ 247.6	$ 410.1	$ 415.9
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in loss (earnings) of consolidated subsidiaries	0.0	0.0	0.0	0.0
Depreciation and amortization			88.7	85.7
Non-cash loss on early extinguishment of debt			17.9	0.0
Amortization of deferred financing costs and debt issuance discount	8.2	9.6	16.7	19.3
(Income) loss from equity method investments	0.9	4.5	(4.8)	(14.0)
Loss (gain) on remeasurement of foreign denominated transactions			47.1	19.0
Net losses on derivatives			14.9	9.4
Share-based compensation expense			27.2	16.1
Deferred income taxes			22.4	10.5
Other			9.8	7.1
Changes in current assets and liabilities, excluding acquisitions and dispositions:
Accounts and notes receivable			27.4	21.7
Inventories and prepaids and other current assets			(11.1)	(69.1)
Accounts and drafts payable			(9.5)	7.2
Advertising fund restricted assets and fund liabilities			1.3	(15.8)
Other accrued liabilities and gift card liability			(164.2)	(19.3)
Other long-term assets and liabilities			27.1	(1.7)
Net cash provided by operating activities			521.0	492.0
Cash flows from investing activities:
Payments for property and equipment			(11.7)	(12.8)
Proceeds from disposal of assets, restaurant closures, and refranchisings			9.6	13.2
Net payment for purchase of Popeyes, net of cash acquired			(1,635.9)	0.0
Return of investment on direct financing leases			7.8	8.1
Settlement/sale of derivatives, net			772.0	1.5
Other investing activities, net			0.3	1.8
Net cash provided by (used for) investing activities			(857.9)	11.8
Cash flows from financing activities:
Proceeds from issuance of long-term debt			3,050.0	0.0
Repayments of long-term debt and capital leases			(377.7)	(34.6)
Payment of financing costs			(47.0)	0.0
Distributions on common, preferred and Partnership exchangeable units			(296.6)	(260.2)
Capital contribution from RBI Inc.			12.3	10.7
Distributions from subsidiaries			0.0	0.0
Other financing activities, net			(2.3)	(22.1)
Net cash provided by (used for) financing activities			2,338.7	(306.2)
Effect of exchange rates on cash and cash equivalents			13.3	6.2
Increase (decrease) in cash and cash equivalents			2,015.1	203.8
Cash and cash equivalents at beginning of period			1,420.4	753.7
Cash and cash equivalents at end of period	3,435.5	957.5	3,435.5	957.5
Eliminations
Cash flows from operating activities:
Net income (loss)	(243.5)	(247.6)	(410.1)	(415.9)
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in loss (earnings) of consolidated subsidiaries	243.5	247.6	410.1	415.9
Depreciation and amortization			0.0	0.0
Non-cash loss on early extinguishment of debt			0.0
Amortization of deferred financing costs and debt issuance discount			0.0	0.0
(Income) loss from equity method investments			0.0	0.0
Loss (gain) on remeasurement of foreign denominated transactions			0.0	0.0
Net losses on derivatives			0.0	0.0
Share-based compensation expense			0.0	0.0
Deferred income taxes			0.0	0.0
Other			0.0	0.0
Changes in current assets and liabilities, excluding acquisitions and dispositions:
Accounts and notes receivable			0.0	0.0
Inventories and prepaids and other current assets			0.0	0.0
Accounts and drafts payable			0.0	0.0
Advertising fund restricted assets and fund liabilities			0.0	0.0
Other accrued liabilities and gift card liability			0.0	0.0
Other long-term assets and liabilities			0.0	0.0
Net cash provided by operating activities			0.0	0.0
Cash flows from investing activities:
Payments for property and equipment			0.0	0.0
Proceeds from disposal of assets, restaurant closures, and refranchisings			0.0	0.0
Net payment for purchase of Popeyes, net of cash acquired			0.0
Return of investment on direct financing leases			0.0	0.0
Settlement/sale of derivatives, net			0.0	0.0
Other investing activities, net			0.0	0.0
Net cash provided by (used for) investing activities			0.0	0.0
Cash flows from financing activities:
Proceeds from issuance of long-term debt			0.0
Repayments of long-term debt and capital leases			0.0	0.0
Payment of financing costs			0.0
Distributions on common, preferred and Partnership exchangeable units			0.0	0.0
Capital contribution from RBI Inc.			0.0	0.0
Distributions from subsidiaries			0.0	0.0
Other financing activities, net			0.0	0.0
Net cash provided by (used for) financing activities			0.0	0.0
Effect of exchange rates on cash and cash equivalents			0.0	0.0
Increase (decrease) in cash and cash equivalents			0.0	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	0.0	0.0
Consolidated Borrowers
Cash flows from operating activities:
Net income (loss)	243.5	247.6	410.1	415.9
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in loss (earnings) of consolidated subsidiaries	0.0	0.0	0.0	0.0
Depreciation and amortization			88.7	85.7
Non-cash loss on early extinguishment of debt			17.9
Amortization of deferred financing costs and debt issuance discount			16.7	19.3
(Income) loss from equity method investments	0.9	4.5	(4.8)	(14.0)
Loss (gain) on remeasurement of foreign denominated transactions			47.1	19.0
Net losses on derivatives			14.9	9.4
Share-based compensation expense			27.2	16.1
Deferred income taxes			22.4	10.5
Other			9.8	7.1
Changes in current assets and liabilities, excluding acquisitions and dispositions:
Accounts and notes receivable			27.4	21.7
Inventories and prepaids and other current assets			(11.1)	(69.1)
Accounts and drafts payable			(9.5)	7.2
Advertising fund restricted assets and fund liabilities			1.3	(15.8)
Other accrued liabilities and gift card liability			(164.2)	(19.3)
Other long-term assets and liabilities			27.1	(1.7)
Net cash provided by operating activities			521.0	492.0
Cash flows from investing activities:
Payments for property and equipment			(11.7)	(12.8)
Proceeds from disposal of assets, restaurant closures, and refranchisings			9.6	13.2
Net payment for purchase of Popeyes, net of cash acquired			(1,635.9)
Return of investment on direct financing leases			7.8	8.1
Settlement/sale of derivatives, net			772.0	1.5
Other investing activities, net			0.3	1.8
Net cash provided by (used for) investing activities			(857.9)	11.8
Cash flows from financing activities:
Proceeds from issuance of long-term debt			3,050.0
Repayments of long-term debt and capital leases			(377.7)	(34.6)
Payment of financing costs			(47.0)
Distributions on common, preferred and Partnership exchangeable units			0.0	0.0
Capital contribution from RBI Inc.			12.3	10.7
Distributions from subsidiaries			(296.6)	(260.2)
Other financing activities, net			(2.3)	(22.1)
Net cash provided by (used for) financing activities			2,338.7	(306.2)
Effect of exchange rates on cash and cash equivalents			13.3	6.2
Increase (decrease) in cash and cash equivalents			2,015.1	203.8
Cash and cash equivalents at beginning of period			1,420.4	753.7
Cash and cash equivalents at end of period	3,435.5	957.5	3,435.5	957.5
RBILP
Cash flows from operating activities:
Net income (loss)	243.5	247.6	410.1	415.9
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in loss (earnings) of consolidated subsidiaries	(243.5)	(247.6)	(410.1)	(415.9)
Depreciation and amortization			0.0	0.0
Non-cash loss on early extinguishment of debt			0.0
Amortization of deferred financing costs and debt issuance discount			0.0	0.0
(Income) loss from equity method investments			0.0	0.0
Loss (gain) on remeasurement of foreign denominated transactions			0.0	0.0
Net losses on derivatives			0.0	0.0
Share-based compensation expense			0.0	0.0
Deferred income taxes			0.0	0.0
Other			0.0	0.0
Changes in current assets and liabilities, excluding acquisitions and dispositions:
Accounts and notes receivable			0.0	0.0
Inventories and prepaids and other current assets			0.0	0.0
Accounts and drafts payable			0.0	0.0
Advertising fund restricted assets and fund liabilities			0.0	0.0
Other accrued liabilities and gift card liability			0.0	0.0
Other long-term assets and liabilities			0.0	0.0
Net cash provided by operating activities			0.0	0.0
Cash flows from investing activities:
Payments for property and equipment			0.0	0.0
Proceeds from disposal of assets, restaurant closures, and refranchisings			0.0	0.0
Net payment for purchase of Popeyes, net of cash acquired			0.0
Return of investment on direct financing leases			0.0	0.0
Settlement/sale of derivatives, net			0.0	0.0
Other investing activities, net			0.0	0.0
Net cash provided by (used for) investing activities			0.0	0.0
Cash flows from financing activities:
Proceeds from issuance of long-term debt			0.0
Repayments of long-term debt and capital leases			0.0	0.0
Payment of financing costs			0.0
Distributions on common, preferred and Partnership exchangeable units			(296.6)	(260.2)
Capital contribution from RBI Inc.			0.0	0.0
Distributions from subsidiaries			296.6	260.2
Other financing activities, net			0.0	0.0
Net cash provided by (used for) financing activities			0.0	0.0
Effect of exchange rates on cash and cash equivalents			0.0	0.0
Increase (decrease) in cash and cash equivalents			0.0	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	$ 0.0	$ 0.0