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Restaurant Information by Ownership Type (Details) - Restaurant	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Number of Restaurants	37,971	37,286
Franchised
Segment Reporting Information [Line Items]
Number of Restaurants	35,278	34,279
Franchised | Conventional franchised
Segment Reporting Information [Line Items]
Number of Restaurants	21,662	21,425
Franchised | Developmental licensed
Segment Reporting Information [Line Items]
Number of Restaurants	7,362	6,972
Franchised | Affiliated
Segment Reporting Information [Line Items]
Number of Restaurants	6,254	5,882
Company-operated
Segment Reporting Information [Line Items]
Number of Restaurants	2,693	3,007

X

- Definition

Represents the number of restaurants.

+ References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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Namespace Prefix:
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X

- Details

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X

- Details

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X

- Details

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X

- Details

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