Hedging Activities and Fair Value Measurements (Details) € in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) derivative_instrument units	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) derivative_instrument units	Jun. 30, 2020 USD ($)	Jun. 30, 2021 EUR (€) derivative_instrument units	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) derivative_instrument	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	$ 146,000,000	$ 222,000,000	$ 146,000,000	$ 222,000,000		$ 165,000,000	$ 36,000,000	$ 248,000,000	$ 173,000,000
Derivative, Notional Amount	11,340,000,000		11,340,000,000				11,349,000,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	(12,000,000)	(6,000,000)	121,000,000	86,000,000
Cost of Goods and Services Sold	945,000,000	791,000,000	1,839,000,000	1,596,000,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	6,000,000	20,000,000	10,000,000	37,000,000
Interest Expense	86,000,000	91,000,000	168,000,000	179,000,000
Other Operating Income (Expense), Net	26,000,000	18,000,000	(11,000,000)	54,000,000
Net currency exchange gain (loss)			(9,000,000)	(12,000,000)
Derivative Asset, Fair Value, Gross Asset	322,000,000		322,000,000				242,000,000
Derivative Liability, Fair Value, Gross Liability	1,163,000,000		1,163,000,000				1,262,000,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	176,000,000		176,000,000				414,000,000
Derivative Asset	156,000,000		156,000,000				109,000,000
Licensing arrangements, asset	166,000,000		166,000,000				218,000,000
Business Combination, Contingent Consideration, Liability	312,000,000		312,000,000				196,000,000
Licensing arrangements, liability	199,000,000		199,000,000				253,000,000
Cash	296,000,000		$ 296,000,000				150,000,000
Licensing Arrangements, Asset, Percentage Of Future Royalty Payments			50.00%
Licensing Arrangements, Asset, Percentage Of Future Royalty Payments Sold			50.00%
Non-cash impact of transferred royalty rights	(43,000,000)	(45,000,000)	$ (43,000,000)	(45,000,000)
Debt Instrument, Fair Value Disclosure	10,431,000,000		10,431,000,000				10,774,000,000
Accumulated Foreign Currency Adjustment Attributable to Parent
Derivative Instruments, Gain (Loss) [Line Items]
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	0	0	0	0
December 2027 Notes [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Long-term Debt	$ 1,068,000,000		$ 1,068,000,000		€ 900		1,105,000,000
Debt Instrument, Interest Rate, Stated Percentage	0.625%		0.625%		0.625%
Licensing arrangement assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount Rate, Fair Value Input	15.00%		15.00%		15.00%
Proceeds from Royalties Received			$ (43,000,000)
Non-cash impact of transferred royalty rights	$ (43,000,000)		(43,000,000)
Increase (Decrease) in Fair Value Adjustments on Other Assets (Liabilities) Carried at Fair Value under Fair Value Option			31,000,000
Licensing arrangement liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-cash impact of transferred royalty rights	(43,000,000)		(43,000,000)
Payments for Royalties			(42,000,000)
Increase (Decrease) in Fair Value Adjustments on Other Assets (Liabilities) Carried at Fair Value under Fair Value Option			28,000,000
Euro-denominated outstanding debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	1,085,000,000.000		1,085,000,000.000				1,118,000,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Licensing arrangements, asset	311,000,000		311,000,000
Licensing arrangements, liability	350,000,000		350,000,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds, at Carrying Value	2,379,000,000		2,379,000,000				1,584,000,000
Equity Securities, FV-NI	176,000,000		176,000,000				414,000,000
Derivative Asset	322,000,000		322,000,000				242,000,000
Licensing arrangements, asset	311,000,000		311,000,000				365,000,000
Assets, Fair Value Disclosure	3,189,000,000		3,189,000,000				2,605,000,000
Derivative Liability	1,163,000,000		1,163,000,000				1,262,000,000
Business Combination, Contingent Consideration, Liability	312,000,000		312,000,000				196,000,000
Licensing arrangements, liability	350,000,000		350,000,000				407,000,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure	1,825,000,000		1,825,000,000				1,865,000,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds, at Carrying Value	2,379,000,000		2,379,000,000				1,584,000,000
Equity Securities, FV-NI	176,000,000		176,000,000				414,000,000
Derivative Asset	0		0				0
Licensing arrangements, asset	0		0				0
Assets, Fair Value Disclosure	2,556,000,000		2,556,000,000				1,998,000,000
Derivative Liability	0		0				0
Business Combination, Contingent Consideration, Liability	0		0				0
Licensing arrangements, liability	0		0				0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0		0				0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds, at Carrying Value	0		0				0
Equity Securities, FV-NI	0		0				0
Derivative Asset	322,000,000		322,000,000				242,000,000
Licensing arrangements, asset	0		0				0
Assets, Fair Value Disclosure	322,000,000		322,000,000				242,000,000
Derivative Liability	1,163,000,000		1,163,000,000				1,262,000,000
Business Combination, Contingent Consideration, Liability	0		0				0
Licensing arrangements, liability	0		0				0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	1,163,000,000		1,163,000,000				1,262,000,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds, at Carrying Value	0		0				0
Equity Securities, FV-NI	0		0				0
Derivative Asset	0		0				0
Licensing arrangements, asset	311,000,000		311,000,000				365,000,000
Assets, Fair Value Disclosure	311,000,000		311,000,000				365,000,000
Derivative Liability	0		0				0
Business Combination, Contingent Consideration, Liability	312,000,000		312,000,000				196,000,000
Licensing arrangements, liability	350,000,000		350,000,000				407,000,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure	662,000,000		662,000,000				603,000,000
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	284,000,000		284,000,000				162,000,000
Derivative Instruments in Hedges, Liabilities, at Fair Value	1,111,000,000		1,111,000,000				1,191,000,000
Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value	$ 1,058,000,000		$ 1,058,000,000				1,094,000,000
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Forward Currency Contracts, Time to Maturity | units	60		60		60
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	$ 128,000,000		$ 128,000,000				53,000,000
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Noncurrent Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	156,000,000		156,000,000				109,000,000
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value	37,000,000		37,000,000				44,000,000
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Noncurrent Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value	16,000,000		16,000,000				54,000,000
Not Designated as Hedging Instrument [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	(1,000,000)	6,000,000	(2,000,000)	(9,000,000)
Foreign Currency Transaction Gain (Loss), before Tax	(5,000,000)	(11,000,000)	(6,000,000)	(3,000,000)
Net currency exchange gain (loss)	(7,000,000)	(5,000,000)	(9,000,000)	(12,000,000)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	5,125,000,000		5,125,000,000				4,946,000,000
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	38,000,000		38,000,000				79,000,000
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	$ 51,000,000		$ 51,000,000				$ 71,000,000
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Term of Contract (less than)			1 year
Derivative, Remaining Maturity			1 year
Weighted Average [Member] | Licensing arrangement assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount Rate, Fair Value Input	15.00%		15.00%		15.00%
Weighted Average [Member] | Licensing arrangement liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount Rate, Fair Value Input	13.00%		13.00%		13.00%
Minimum [Member] | Licensing arrangement liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount Rate, Fair Value Input	12.00%		12.00%		12.00%
Maximum [Member] | Licensing arrangement liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount Rate, Fair Value Input	15.00%		15.00%		15.00%
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	$ 75,000,000		$ 75,000,000
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	$ (5,000,000)		$ (5,000,000)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of Interest Rate Derivatives Held | derivative_instrument	0		0		0		0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 4,725,000,000		$ 4,725,000,000				$ 4,531,000,000
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	(15,000,000)	(8,000,000)	156,000,000	111,000,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	3,000,000	2,000,000	(35,000,000)	(25,000,000)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	(12,000,000)	(6,000,000)	121,000,000	86,000,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(10,000,000)	(28,000,000)	(16,000,000)	(51,000,000)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	2,000,000	6,000,000	4,000,000	11,000,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	(7,000,000)	(21,000,000)	(12,000,000)	(39,000,000)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	(27,000,000)		(27,000,000)				$ (29,000,000)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	0	0	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	0	0	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	0	0	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	1,000,000	1,000,000	3,000,000	3,000,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	0	0	(1,000,000)	(1,000,000)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	$ 1,000,000	1,000,000	$ 2,000,000	2,000,000
Fair Value Hedging | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of Interest Rate Derivatives Held | derivative_instrument	0		0		0		0
Net Investment Hedging [Member] | Foreign Exchange Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Used in Net Investment Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	$ 7,000,000		$ 7,000,000
Net Investment Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	493,000,000		493,000,000				$ 1,004,000,000
Net Investment Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	(8,000,000)	(5,000,000)	43,000,000	17,000,000
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, Tax	2,000,000	1,000,000	(10,000,000)	(25,000,000)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	(7,000,000)	(4,000,000)	33,000,000	(8,000,000)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, before Tax	(3,000,000)	(6,000,000)	(9,000,000)	(12,000,000)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, Tax	1,000,000	1,000,000	2,000,000	3,000,000
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, after Tax	(3,000,000)	(5,000,000)	(7,000,000)	(9,000,000)
Net Investment Hedging [Member] | Designated as Hedging Instrument [Member] | foreign currency denominated in debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	997,000,000		997,000,000				$ 868,000,000
Net Investment Hedging [Member] | Designated as Hedging Instrument [Member] | foreign currency denominated in debt [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	(12,000,000)	(22,000,000)	35,000,000	2,000,000
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, Tax	3,000,000	5,000,000	(8,000,000)	3,000,000
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	(10,000,000)	(17,000,000)	27,000,000	5,000,000
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, before Tax	0	0	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, Tax	0	0	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, after Tax	$ 0	$ 0	$ 0	$ 0