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Summary of Significant Accounting Policies Restaurant Information by Ownership Type (Detail) $ in Millions	Dec. 31, 2020 USD ($) Restaurant	Dec. 31, 2019 USD ($) Restaurant	Dec. 31, 2018 Restaurant
Segment Reporting Information [Line Items]
Number of Restaurants | Restaurant	39,198	38,695	37,855
Debt obligations, fair value	$ 43,700.0
Amounts outstanding	$ 37,440.4	$ 34,177.2
Franchised restaurants:
Segment Reporting Information [Line Items]
Number of Restaurants	36,521	36,059	35,085
Company-operated restaurants:
Segment Reporting Information [Line Items]
Number of Restaurants	2,677	2,636	2,770
Conventional franchised | Franchised restaurants:
Segment Reporting Information [Line Items]
Number of Restaurants	21,712	21,837	21,685
Developmental licensed | Franchised restaurants:
Segment Reporting Information [Line Items]
Number of Restaurants	7,663	7,648	7,225
Affiliated | Franchised restaurants:
Segment Reporting Information [Line Items]
Number of Restaurants	7,146	6,574	6,175

X

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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