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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of liability recognized arising from contingent consideration in a business combination.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Financial Instruments and Fair Value Measures - Fair Value Measures (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets
Foreign currency contracts			$ 53	$ 189	$ 53
Liabilities
Foreign currency contracts			132	166	132
Change in fair value recognized in net earnings				(5,753)	(3,091)	$ (49)
Stemcentrx Inc.
Liabilities
Change in fair value recognized in net earnings	$ 91		(428)
Skyrizi
Liabilities
Change in fair value recognized in net earnings		$ (2,300)		(4,700)
Recurring
Assets
Cash and equivalents			39,924	8,449	39,924
Debt securities			3	50	3
Equity securities			24	159	24
Interest rate swap contracts			31	138	31
Total assets			40,004	8,859	40,004
Liabilities
Interest rate swap contracts			76	34	76
Contingent consideration			7,340	12,997	7,340
Total liabilities			7,472	13,163	7,472
Recurring \| Money market funds
Assets
Money market funds and time deposits				12
Recurring \| Foreign currency contracts
Assets
Foreign currency contracts			22	51	22
Liabilities
Foreign currency contracts			56	132	56
Recurring \| Quoted prices in active markets for identical assets (Level 1)
Assets
Cash and equivalents			1,542	2,758	1,542
Debt securities			0	0	0
Equity securities			24	149	24
Interest rate swap contracts			0	0	0
Total assets			1,566	2,907	1,566
Liabilities
Interest rate swap contracts			0	0	0
Contingent consideration			0	0	0
Total liabilities			0	0	0
Recurring \| Quoted prices in active markets for identical assets (Level 1) \| Money market funds
Assets
Money market funds and time deposits				0
Recurring \| Quoted prices in active markets for identical assets (Level 1) \| Foreign currency contracts
Assets
Foreign currency contracts			0	0	0
Liabilities
Foreign currency contracts			0	0	0
Recurring \| Significant other observable inputs (Level 2)
Assets
Cash and equivalents			38,382	5,691	38,382
Debt securities			3	50	3
Equity securities			0	10	0
Interest rate swap contracts			31	138	31
Total assets			38,438	5,952	38,438
Liabilities
Interest rate swap contracts			76	34	76
Contingent consideration			0	0	0
Total liabilities			132	166	132
Recurring \| Significant other observable inputs (Level 2) \| Money market funds
Assets
Money market funds and time deposits				12
Recurring \| Significant other observable inputs (Level 2) \| Foreign currency contracts
Assets
Foreign currency contracts			22	51	22
Liabilities
Foreign currency contracts			56	132	56
Recurring \| Significant unobservable inputs (Level 3)
Assets
Cash and equivalents			0	0	0
Debt securities			0	0	0
Equity securities			0	0	0
Interest rate swap contracts			0	0	0
Total assets			0	0	0
Liabilities
Interest rate swap contracts			0	0	0
Contingent consideration			7,340	12,997	7,340
Total liabilities			7,340	12,997	7,340
Recurring \| Significant unobservable inputs (Level 3) \| Money market funds
Assets
Money market funds and time deposits				0
Recurring \| Significant unobservable inputs (Level 3) \| Foreign currency contracts
Assets
Foreign currency contracts			0	0	0
Liabilities
Foreign currency contracts			$ 0	$ 0	$ 0