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Percentage of Remaining Equity Interest being Acquired

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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.

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Face amount or stated value per share of common stock.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

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Business Combinations (The Merger - Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	9 Months Ended
	Mar. 10, 2020	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 26, 2019
Business Acquisition [Line Items]
Common Stock, par value				$ 0.001		$ 0.001	$ 0.001
Loss from Equity Method Investment in the Joint Venture		$ 8,764	$ 104,497
Increase in deferred tax liability				$ (4,692)	$ 1,604
Joint Venture [Member] \| Prior to Merger [Member]
Business Acquisition [Line Items]
Ownership percentage	42.00%
Percentage of remaining equity interest being acquired	58.00%
Loss from Equity Method Investment in the Joint Venture	$ 230,229
McKesson Common Stock [Member]
Business Acquisition [Line Items]
Common Stock, par value	$ 0.01
Number of shares of equity interests issued	15,426,537
SpinCo Common Stock [Member]
Business Acquisition [Line Items]
Common Stock, par value	$ 0.001
Number of shares of equity interests issued	175,995,192
Change Common Stock [Member]
Business Acquisition [Line Items]
Common Stock, par value	$ 0.001