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Gain (Loss) on Sale of Business, Net of Tax

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Loss Contingency Accrual, Provision, Net of Tax

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Number of Business Operations

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Number of National Brand Medical-Surgical Products

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Proportionate Gain (Loss) on Equity Method Investment

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Revenue Derived From Services, Percentage

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of unrealized gain (loss) recognized in earnings from investment in debt and equity securities measured at fair value with change in fair value recognized in net income, and recognized from transfer of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and investment in debt security measured at amortized cost (held-to-maturity) to investment in debt security measured at fair value with change in fair value recognized in net income (trading). Excludes other-than-temporary impairment (OTTI).

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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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.

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Amount after tax of loss recognized that results from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Interest and debt related expenses associated with nonoperating financing activities of the entity.

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The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period.

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Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

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Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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Segments of Business (Details) numberOfProducts in Thousands, $ in Millions	3 Months Ended					6 Months Ended	9 Months Ended
	Dec. 31, 2020 USD ($) business_operation country numberOfProducts	Sep. 30, 2020 USD ($) segment	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2020 segment business_operation country numberOfProducts	Dec. 31, 2020 USD ($) business_operation country numberOfProducts	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment		4				4
Segment revenues
Total revenues	$ 62,599.0		$ 59,172.0				$ 179,086.0	$ 172,516.0
Segment operating profit (loss)
Total operating profit (loss)	(7,362.0)		360.0				(6,050.0)	1,620.0
Corporate income (expenses), net	(8,246.0)		(202.0)				(8,462.0)	(713.0)
Interest expense	(55.0)		(64.0)				(165.0)	(184.0)
Income (loss) from continuing operations before income taxes	(7,363.0)		294.0				(6,063.0)	(57.0)
Pre-tax credits related to LIFO accounting							115.0	114.0
Restructuring, impairment, and related charges	40.0		42.0				156.0	110.0
Goodwill and other asset impairment charges							236.0	113.0
Goodwill impairment charge	0.0		2.0				69.0	2.0
Net gains associated with equity investments	30.0						89.0
German Wholesale Business
Segment operating profit (loss)
Pre-tax loss on sale of business	47.0						57.0
After-tax loss on sale of business	47.0
National Prescription Opioid Litigation
Segment operating profit (loss)
Pre-tax expenses related to estimated litigation liability	8,100.0						8,100.0
After-tax expenses related to estimated litigation liability	6,700.0						6,700.0
Joint Venture \| Change Healthcare JV
Segment operating profit (loss)
Impairment				$ 1,200.0				1,200.0
Pre-tax dilution loss				$ 246.0				246.0
Proportionate loss from investment in Change Healthcare			28.0					75.0
United States \| Pension Plan
Segment operating profit (loss)
Pre-tax settlement expense					$ 17.0			122.0
National Prescription Opioid Litigation
Segment operating profit (loss)
Corporate income (expenses), net							131.0
Charge in connection with State of New York's Opioid Stewardship Act							50.0
Opioid-related settlement charges								82.0
Pre-tax litigation expense	34.0		36.0				118.0	108.0
United States
Segment Reporting Information [Line Items]
Number of reportable segments \| segment						3
U.K and Canada
Segment operating profit (loss)
Restructuring, impairment, and related charges			100.0					116.0
Operating Segments
Segment operating profit (loss)
Total operating profit (loss)	938.0		560.0				2,564.0	840.0
Corporate
Segment operating profit (loss)
Total operating profit (loss)	0.0		(33.0)				0.0	(1,483.0)
Restructuring, impairment, and related charges	20.0		23.0				60.0	67.0
U.S. Pharmaceutical
Segment revenues
Total revenues	49,495.0		46,453.0				142,232.0	135,855.0
Segment operating profit (loss)
Pre-tax credits related to LIFO accounting	11.0		66.0				115.0	114.0
Goodwill impairment charge							0.0
U.S. Pharmaceutical \| Operating Segments
Segment operating profit (loss)
Total operating profit (loss)	635.0		677.0				$ 1,871.0	$ 1,894.0
Revenue derived from services, percentage (less than)							1.00%	1.00%
Restructuring, impairment, and related charges	6.0		7.0				$ 18.0	$ 9.0
International
Segment revenues
Total revenues	9,273.0		9,864.0				27,365.0	28,592.0
Segment operating profit (loss)
Restructuring, impairment, and related charges	131.0						189.0
Goodwill and other asset impairment charges	115.0		94.0				115.0	94.0
Goodwill impairment charge		$ 69.0					69.0
After-tax goodwill impairment		$ 69.0					69.0
International \| Strategic Growth Initiative Plan
Segment operating profit (loss)
Restructuring, impairment, and related charges	$ 9.0						$ 50.0
International \| Europe
Segment Reporting Information [Line Items]
Number of countries in which entity segment operates \| country	13					13	13
Number of business operations \| business_operation	2					2	2
International \| Operating Segments
Segment operating profit (loss)
Total operating profit (loss)	$ (71.0)		(290.0)				$ (113.0)	$ (229.0)
Revenue derived from services, percentage (less than)							7.00%	7.00%
Restructuring, impairment, and related charges	$ 16.0		6.0				$ 74.0	$ 22.0
Medical-Surgical Solutions
Segment Reporting Information [Line Items]
Number of national brand medical-surgical products offered (more than) \| numberOfProducts	275					275	275
Segment revenues
Total revenues	$ 3,054.0		2,141.0				$ 7,388.0	6,100.0
Segment operating profit (loss)
Goodwill impairment charge							0.0
Inventory impairments and excess inventory	35.0						49.0
Medical-Surgical Solutions \| Operating Segments
Segment operating profit (loss)
Total operating profit (loss)	260.0		124.0				$ 536.0	$ 378.0
Revenue derived from services, percentage (less than)							2.00%	2.00%
Restructuring, impairment, and related charges	(2.0)		6.0				$ 4.0	$ 12.0
Prescription Technology Solutions
Segment revenues
Total revenues	777.0		714.0				2,101.0	1,969.0
Prescription Technology Solutions \| Operating Segments
Segment operating profit (loss)
Total operating profit (loss)	114.0		82.0				$ 270.0	$ 280.0
Revenue derived from services, percentage (less than)							38.00%	38.00%
Restructuring, impairment, and related charges	$ 0.0		$ 0.0				$ 0.0	$ 0.0