Basis of Presentation and Accounting Policies Recently Issued Accounting Pronouncements (Details) $ in Millions	Jan. 01, 2018 USD ($)
Subsequent Event \| Accounting Standards Update 2014-09 \| Difference between Revenue Guidance in Effect before and after Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative reduction to Partners' Capital	$ 12.8

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.

No definition available.

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