Segments of Business - Narrative (Details) product in Thousands, $ in Millions	9 Months Ended
Dec. 31, 2021 USD ($) segment business_operation product country
Segment Reporting Information [Line Items]
Number of reportable segments	4
International (1) \| Operating Segments \| Disposed of by sale \| Canadian Health Benefit Claims Management and Plan Administrative Services Business
Segment Reporting Information [Line Items]
Pre-tax gain on sale of business \| $	$ 59
United States
Segment Reporting Information [Line Items]
Number of reportable segments	3
United States \| Medical-Surgical Solutions
Segment Reporting Information [Line Items]
Number of national brand medical-surgical products offered (more than) \| product	275
Europe \| International (1)
Segment Reporting Information [Line Items]
Number of countries in which entity segment operates \| country	12
Number of business operations \| business_operation	2

Number of Business Operations

No definition available.

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- Definition

Number of National Brand Medical-Surgical Products

+ References

No definition available.

+ Details

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- Definition

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

The number of countries in which the entity operates as of balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

+ 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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- Details

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- Details

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- Details

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- Details

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- Details

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