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Provisional tax benefit related to transaction

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Amount classified as deferred tax liabilities attributable to disposal group held for sale or disposed of.

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Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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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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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Divestitures and Assets Held for Sale (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Aug. 01, 2018	Jun. 30, 2018	Jun. 30, 2018	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Initial Ownership Interest Before Sale				98.00%
China Pharmaceutical and Medical Products Distribution Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses			$ 861
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities		$ 59	59
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal			41
naviHealth [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities		38	$ 38
Provisional tax benefit related to transaction		$ 12
Subsequent Event \| naviHealth [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses	$ 736
Initial Ownership Interest Before Sale	98.00%
Ownership interest in Partnership	44.00%
Partnership Indirect Ownership	100.00%