Tax Receivable Agreements (Narrative) (Details) $ in Thousands	12 Months Ended
Mar. 31, 2020 USD ($)
Tax Receivable Agreements 2009-2011 [Member]
Related Party Transaction [Line Items]
Net cash tax savings, percentage payment provided by agreement	85.00%
Tax Receivable Agreement 2017 [Member]
Related Party Transaction [Line Items]
Net cash tax savings, percentage payment provided by agreement	85.00%
McKesson Tax Receivable Agreement [Member]
Related Party Transaction [Line Items]
Net cash tax savings, percentage payment provided by agreement	85.00%
Loss contingecy	$ 164,633
McKesson Tax Receivable Agreement [Member] \| Joint Venture [Member]
Related Party Transaction [Line Items]
Maximum percentage ownership allowed to receive net cash tax savings payment	20.00%

Maximum Percentage Ownership Allowed to Receive Net Cash Tax Savings Realized, Percentage Payment Provided by Agreement

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- Definition

Net Cash Tax Savings Realized, Percentage Payment Provided by Agreement

+ References

No definition available.

+ Details

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- Definition

The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

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- 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.

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- Details

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- Details

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