Nature of Business and Organization (Narrative) (Details)		3 Months Ended
	Jun. 26, 2019 $ / shares shares	Jun. 30, 2019 $ / shares shares	Mar. 31, 2019 $ / shares shares
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Ownership percentage in Joint Venture		30.00%
Stock split conversion ratio	126.4
Common Stock, shares authorized | shares	9,000,000,000	9,000,000,000	252,800,000
Common Stock, par value | $ / shares	$ 0.001	$ 0.001	$ 0.001
Preferred stock, shares authorized | shares	900,000,000	900,000,000	0
Preferred stock, par value | $ / shares	$ 0.001	$ 0.001	$ 0.001
McKesson Corporation [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Ownership percentage in Joint Venture		70.00%
Common Class X [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Common Stock, shares authorized | shares	1	1	1
Common Stock, par value | $ / shares	$ 0.001	$ 0.001	$ 0.001