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Asset Acquisition, Consideration Transferred, Milestone Payments, Maximum

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Asset Acquisition, Consideration Transferred, Upfront Payment

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Concentration Risk, Amount

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Lessee, Operating Lease, Option To Extend, Term

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Number Of Accounting Standards Adopted

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Payment For Licensing Arrangement

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Medicare rebates, Medicaid and related state program rebates, performance-based contract rebates, chargebacks, sales allowances and sales returns and cash discounts

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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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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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of the cumulative effect on retained earnings before related income tax effect.

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Amount of the cumulative effect on retained earnings net of related income tax effect.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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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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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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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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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of lessee's right to use underlying asset under operating lease.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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Basis of Presentation and Significant Accounting Policies - Additional Information (Details) $ / shares in Units, $ in Millions					1 Months Ended	3 Months Ended	12 Months Ended			18 Months Ended
	Jul. 30, 2019 USD ($) $ / shares	Jul. 01, 2019 USD ($)	Jan. 01, 2019 USD ($) Accounting_standard	Dec. 22, 2016 USD ($)	Nov. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) Operating_Segment	Dec. 31, 2018 USD ($) Operating_Segment	Dec. 31, 2017 USD ($)	Jul. 02, 2019 USD ($)	Jun. 28, 2020	Feb. 03, 2017 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of operating segments \| Operating_Segment							3	2
Number of accounting standards adopted \| Accounting_standard			4
Cash payments for acquisition, net of cash acquired							$ 10,861	$ 0	$ 1,000
ROU assets						$ 1,313	1,313
Lease liabilities (long-term)						1,048	1,048
Accruals for Medicare rebates, Medicaid and related state program rebates, performance-based contract rebates, chargebacks, sales allowances, cash discounts and sales returns						5,689	5,689	5,426
Advertising expense							2,600	3,100	3,100
Variable lease cost							328
Array [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Business acquisition, per share in cash (in dollars per share) \| $ / shares	$ 48
Payments to acquire businesses, cash portion	$ 11,200
Cash payments for acquisition, net of cash acquired	$ 10,900
AstraZeneca [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments to acquire businesses, cash portion				$ 555					605
Consideration transferred				$ 1,000
ICU Medical [Member] \| Disposed of by Sale, Not Discontinued Operations [Member] \| HIS [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received for disposition												$ 900
Revenue [Member] \| Top Eight Products [Member] \| Product Concentration Risk [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Concentration risk, amount							$ 1,000
Concentration risk, percentage							49.00%
Revenue [Member] \| Top Nine Products [Member] \| Product Concentration Risk [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Concentration risk, amount									$ 1,000
Concentration risk, percentage									46.00%
Revenue [Member] \| Top Ten Products [Member] \| Product Concentration Risk [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Concentration risk, amount								$ 1,000
Concentration risk, percentage								51.00%
Accounting Standards Update 2016-02 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
ROU assets			$ 1,400
Lease liabilities (long-term)			1,400
Cumulative effect on retained earnings, before tax			30
Cumulative effect on retained earnings, net of tax			$ 20
Research and Development Expense [Member] \| Akcea And Ionis [Member] \| Licensing Agreements [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payment for licensing arrangement					$ 250	$ 250
Therachon Asset Acquisition [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Upfront payment		$ 340
Maximum potential milestone payments		$ 470
Fair value of consideration transferred										$ 322
Minimum [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating lease term						1 year	1 year
Operating lease term, option to extend							5 years
Maximum [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating lease term						30 years	30 years
Operating lease term, option to extend							10 years
Forecast [Member] \| Upjohn And Mylan [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncontrolling interest, ownership percentage by parent											57.00%
Forecast [Member] \| Mylan [Member] \| Upjohn And Mylan [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners											43.00%