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Segment Information Disaggregated Revenue Within Reportable Segments (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Revenue | $ 37,341 | $ 35,213
Operating Segments |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Revenue | 37,345 | 35,217
Operating Segments | Pharmaceutical |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Revenue | 33,428 | 31,416
Operating Segments | Pharmaceutical | Nuclear Precision Health Services [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Revenue | 216 | 207
Operating Segments | Pharmaceutical | Pharmaceutical Distribution and Specialty [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Revenue | 33,212 | 31,209
Operating Segments | Medical |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Revenue | 3,917 | 3,801
Operating Segments | Medical | Cardinal Health At Home [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Revenue | 471 | 421
Operating Segments | Medical | Medical distribution and products [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Revenue | 3,446 | 3,380
Corporate |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Revenue | $ (4) | $ (4)

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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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. + Details
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