LEASES - Future Operating Commitments to be Paid and Received (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2021	$ 166,635
2022	148,989
2023	134,030
2024	120,190
2025	104,666
Thereafter	258,605
Total future obligations	933,115
Less amounts representing interest	115,390
Present value of lease liabilities	817,725
Less current lease liabilities	137,271	$ 148,904
Long-term lease liability	680,454
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
2021	(121,149)
2022	(110,951)
2023	(100,640)
2024	(90,649)
2025	(79,398)
Thereafter	(190,793)
Total future obligations	(693,580)
Lessor Operating Lease Payments Net of Sublease Income Fiscal Year Maturity Abstract [Abstract]
2021	45,486
2022	38,038
2023	33,390
2024	29,541
2025	25,268
Thereafter	67,812
Total future obligations	239,535
Operating Segments \| Franchise
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2021	121,149
2022	110,951
2023	100,640
2024	90,649
2025	79,398
Thereafter	190,793
Total future obligations	693,580
Less amounts representing interest	85,432
Present value of lease liabilities	608,148
Less current lease liabilities	99,217
Long-term lease liability	508,931
Operating Segments \| Company-owned
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2021	43,705
2022	36,628
2023	31,943
2024	28,057
2025	23,746
Thereafter	59,994
Total future obligations	224,073
Less amounts representing interest	27,193
Present value of lease liabilities	196,880
Less current lease liabilities	36,767
Long-term lease liability	160,113
Corporate
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2021	1,781
2022	1,410
2023	1,447
2024	1,484
2025	1,522
Thereafter	7,818
Total future obligations	15,462
Less amounts representing interest	2,765
Present value of lease liabilities	12,697
Less current lease liabilities	1,287
Long-term lease liability	$ 11,410

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income

No definition available.

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, After Year Five

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Next Twelve Months

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Year Five

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Year Four

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Year Three

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Year Two

+ References

No definition available.

+ Details

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- Definition

Lessor Operating Lease Payments Net of Sublease Income Fiscal Year Maturity

+ References

No definition available.

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year.

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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- References

No definition available.

+ Details

Name:	us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of lease payments to be received by lessor for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease payments to be received by lessor in fifth fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease payments to be received by lessor in fourth year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease payments to be received by lessor in next fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease payments to be received by lessor after fifth fiscal year following latest statement of financial position date for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

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Period Type:	instant

- Definition

Amount of lease payments to be received by lessor in third fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease payments to be received by lessor in second fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ References

+ Details

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

+ References

+ Details

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