Supplemental Financial Information - Condensed Consolidating Balance Sheets (Detail) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 3,435.5	$ 1,420.4	$ 957.5	$ 753.7
Accounts and notes receivable, net	388.8	403.5
Inventories, net	89.5	71.8
Advertising fund restricted assets	92.8	57.7
Prepaids and other current assets	106.9	103.6
Total current assets	4,113.5	2,057.0
Property and equipment, net	2,153.5	2,054.7
Intangible assets, net	10,841.6	9,228.0
Goodwill	5,683.7	4,675.1
Net investment in property leased to franchisees	81.5	91.9
Derivative assets	0.0	717.9
Intercompany receivable	0.0	0.0
Investment in subsidiaries	0.0	0.0
Other assets, net	363.5	300.7
Total assets	23,237.3	19,125.3
Current liabilities:
Accounts and drafts payable	376.1	369.8
Other accrued liabilities	492.1	469.3
Gift card liability	139.5	194.4
Advertising fund liabilities	120.7	83.3
Current portion of long term debt and capital leases	76.3	93.9
Total current liabilities	1,204.7	1,210.7
Term debt, net of current portion	11,252.9	8,410.2
Capital leases, net of current portion	231.2	218.4
Other liabilities, net	1,178.9	784.9
Payables to affiliates	0.0	0.0
Deferred income taxes, net	2,198.0	1,715.1
Total liabilities	16,065.7	12,339.3
Partnership preferred units	3,297.0	3,297.0
Partners’ capital:
Common shares	0.0	0.0
Retained Earnings	0.0	0.0
Accumulated other comprehensive income (loss)	(1,118.4)	(1,355.4)
Total Partners’ capital	3,870.9	3,484.9
Noncontrolling interests	3.7	4.1
Total equity	3,874.6	3,489.0
Total liabilities, Partnership preferred units and equity	23,237.3	19,125.3
Class A common units
Partners’ capital:
Class A common units	3,470.2	3,364.1
Total equity	3,470.2	3,364.1
Partnership exchangeable units
Partners’ capital:
Partnership exchangeable units	1,519.1	1,476.2
Total equity	1,519.1	1,476.2
Eliminations
Current assets:
Cash and cash equivalents	0.0	0.0	0.0	0.0
Accounts and notes receivable, net	0.0	0.0
Inventories, net	0.0	0.0
Advertising fund restricted assets	0.0	0.0
Prepaids and other current assets	0.0	0.0
Total current assets	0.0	0.0
Property and equipment, net	0.0	0.0
Intangible assets, net	0.0	0.0
Goodwill	0.0	0.0
Net investment in property leased to franchisees	0.0	0.0
Derivative assets		0.0
Intercompany receivable	(155.4)	(146.1)
Investment in subsidiaries	(7,171.6)	(6,786.0)
Other assets, net	0.0	0.0
Total assets	(7,327.0)	(6,932.1)
Current liabilities:
Accounts and drafts payable	0.0	0.0
Other accrued liabilities	0.0	0.0
Gift card liability	0.0	0.0
Advertising fund liabilities	0.0	0.0
Current portion of long term debt and capital leases	0.0	0.0
Total current liabilities	0.0	0.0
Term debt, net of current portion	0.0	0.0
Capital leases, net of current portion	0.0	0.0
Other liabilities, net	0.0	0.0
Payables to affiliates	(155.4)	(146.1)
Deferred income taxes, net	0.0	0.0
Total liabilities	(155.4)	(146.1)
Partnership preferred units	0.0	0.0
Partners’ capital:
Common shares	(6,871.5)	(6,825.8)
Retained Earnings	(1,414.8)	(1,311.5)
Accumulated other comprehensive income (loss)	1,118.4	1,355.4
Total Partners’ capital	(7,167.9)	(6,781.9)
Noncontrolling interests	(3.7)	(4.1)
Total equity	(7,171.6)	(6,786.0)
Total liabilities, Partnership preferred units and equity	(7,327.0)	(6,932.1)
Eliminations | Class A common units
Partners’ capital:
Class A common units	0.0	0.0
Eliminations | Partnership exchangeable units
Partners’ capital:
Partnership exchangeable units	0.0	0.0
Consolidated Borrowers
Current assets:
Cash and cash equivalents	3,435.5	1,420.4	957.5	753.7
Accounts and notes receivable, net	388.8	403.5
Inventories, net	89.5	71.8
Advertising fund restricted assets	92.8	57.7
Prepaids and other current assets	106.9	103.6
Total current assets	4,113.5	2,057.0
Property and equipment, net	2,153.5	2,054.7
Intangible assets, net	10,841.6	9,228.0
Goodwill	5,683.7	4,675.1
Net investment in property leased to franchisees	81.5	91.9
Derivative assets		717.9
Intercompany receivable	0.0	0.0
Investment in subsidiaries	0.0	0.0
Other assets, net	363.5	300.7
Total assets	23,237.3	19,125.3
Current liabilities:
Accounts and drafts payable	376.1	369.8
Other accrued liabilities	336.7	323.2
Gift card liability	139.5	194.4
Advertising fund liabilities	120.7	83.3
Current portion of long term debt and capital leases	76.3	93.9
Total current liabilities	1,049.3	1,064.6
Term debt, net of current portion	11,252.9	8,410.2
Capital leases, net of current portion	231.2	218.4
Other liabilities, net	1,178.9	784.9
Payables to affiliates	155.4	146.1
Deferred income taxes, net	2,198.0	1,715.1
Total liabilities	16,065.7	12,339.3
Partnership preferred units	0.0	0.0
Partners’ capital:
Common shares	6,871.5	6,825.8
Retained Earnings	1,414.8	1,311.5
Accumulated other comprehensive income (loss)	(1,118.4)	(1,355.4)
Total Partners’ capital	7,167.9	6,781.9
Noncontrolling interests	3.7	4.1
Total equity	7,171.6	6,786.0
Total liabilities, Partnership preferred units and equity	23,237.3	19,125.3
Consolidated Borrowers | Class A common units
Partners’ capital:
Class A common units	0.0	0.0
Consolidated Borrowers | Partnership exchangeable units
Partners’ capital:
Partnership exchangeable units	0.0	0.0
RBILP
Current assets:
Cash and cash equivalents	0.0	0.0	$ 0.0	$ 0.0
Accounts and notes receivable, net	0.0	0.0
Inventories, net	0.0	0.0
Advertising fund restricted assets	0.0	0.0
Prepaids and other current assets	0.0	0.0
Total current assets	0.0	0.0
Property and equipment, net	0.0	0.0
Intangible assets, net	0.0	0.0
Goodwill	0.0	0.0
Net investment in property leased to franchisees	0.0	0.0
Derivative assets		0.0
Intercompany receivable	155.4	146.1
Investment in subsidiaries	7,171.6	6,786.0
Other assets, net	0.0	0.0
Total assets	7,327.0	6,932.1
Current liabilities:
Accounts and drafts payable	0.0	0.0
Other accrued liabilities	155.4	146.1
Gift card liability	0.0	0.0
Advertising fund liabilities	0.0	0.0
Current portion of long term debt and capital leases	0.0	0.0
Total current liabilities	155.4	146.1
Term debt, net of current portion	0.0	0.0
Capital leases, net of current portion	0.0	0.0
Other liabilities, net	0.0	0.0
Payables to affiliates	0.0	0.0
Deferred income taxes, net	0.0	0.0
Total liabilities	155.4	146.1
Partnership preferred units	3,297.0	3,297.0
Partners’ capital:
Common shares	0.0	0.0
Retained Earnings	0.0	0.0
Accumulated other comprehensive income (loss)	(1,118.4)	(1,355.4)
Total Partners’ capital	3,870.9	3,484.9
Noncontrolling interests	3.7	4.1
Total equity	3,874.6	3,489.0
Total liabilities, Partnership preferred units and equity	7,327.0	6,932.1
RBILP | Class A common units
Partners’ capital:
Class A common units	3,470.2	3,364.1
RBILP | Partnership exchangeable units
Partners’ capital:
Partnership exchangeable units	$ 1,519.1	$ 1,476.2