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BUSINESS DESCRIPTION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Self-Insurance Accruals, Deferred Rent and Rent Expense, Shipping and Handling Costs (Details) $ in Millions | 12 Months Ended
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Jun. 30, 2017 USD ($) renewal_period item | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($)
Self-Insurance Accruals |  |  |
(Decrease) increase in self-insurance expense due to change in estimates related to prior year open policy periods | $ (1.3) | $ (0.8) | $ 0.1
Number of times the entity updates loss projections each year | item | 4 |  |
Self-insurance accruals, current | $ 12.4 | 12.7 |
Self-insurance accruals, noncurrent | $ 26.1 | 28.0 |
Deferred Rent and Rent Expense |  |  |
Number of renewal periods | renewal_period | 1 |  |
Shipping and Handling Costs: |  |  |
Shipping and handling costs | $ 3.7 | $ 3.6 | $ 3.6

X
- Definition Represents the increase or decrease in self-insurance expense resulting from changes in estimates related to prior year open policy periods related to continuing operations. + References No definition available. + Details
Name: | rgs_IncreaseDecreaseInSelfInsuranceExpenseDueToChangeInPriorYearEstimates
Namespace Prefix: | rgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the number of times the entity updates loss projections each year. + References No definition available. + Details
Name: | rgs_LossProjectionUpdatePeriod
Namespace Prefix: | rgs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating Leases, Number of Renewal Periods + References No definition available. + Details
Name: | rgs_OperatingLeasesNumberofRenewalPeriods
Namespace Prefix: | rgs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | rgs_SelfInsuranceAccrualsAbstract
Namespace Prefix: | rgs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, arising from workmen's compensation-type of incidents that are expected to be paid within one year (or the normal operating cycle, if longer). + References No definition available. + Details
Name: | rgs_SelfInsuranceReserveWorkersCompensationCurrent
Namespace Prefix: | rgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, arising from workmen's compensation-type of incidents that are expected to be paid after one year (or the normal operating cycle, if longer). + References No definition available. + Details
Name: | rgs_SelfInsuranceReserveWorkersCompensationNoncurrent
Namespace Prefix: | rgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | rgs_ShippingAndHandlingCostsAbstract
Namespace Prefix: | rgs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesOperatingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=68058157&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68080631&loc=d3e61069-111654 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Handling Costs -URI http://asc.fasb.org/extlink&oid=51575068 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=68075638&loc=d3e60635-111653 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68058157&loc=d3e18726-107790 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6408413&loc=d3e221937-122793 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Shipping Costs -URI http://asc.fasb.org/extlink&oid=51575562 + Details
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Balance Type: | debit
Period Type: | duration