Business Acquisitions and Divestitures - Acquisition of Medical Specialties Distributors (Details) - Medical Specialties Distributors LLC (“MSD”) - USD ($) $ in Millions	May 31, 2019	Jun. 01, 2018	Mar. 31, 2019
Business Acquisition [Line Items]
Net purchase consideration		$ 784
Intangible assets	$ 326		$ 326
Weighted average life (years)	18 years

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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