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v3.8.0.1

Basis of Presentation (Details) | 3 Months Ended
--- | ---
Dec. 31, 2017 shares
Class B membership units |
Related Party Transaction [Line Items] |
Membership units (in units) | 1,000,000
RMR LLC |
Related Party Transaction [Line Items] |
Ownership percentage | 51.90%
Class A common shares | Class A membership units |
Related Party Transaction [Line Items] |
Membership units (in units) | 15,164,066
Capital Unit Redeemable Class A Units | ABP Trust |
Related Party Transaction [Line Items] |
Membership units (in units) | 15,000,000
Ownership percentage | 48.10%

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- Definition Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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