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Hedging Activities and Fair Value Measurements (Details) € in Millions, £ in Millions, $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) units | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) units | Sep. 30, 2019 USD ($) | Sep. 30, 2019 GBP (£) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 EUR (€)
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Payments for Hedge, Investing Activities |  |  | $ 0 | $ 294 |  |  |
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net |  |  | 30 |  |  | $ 34 |
Derivative, Notional Amount | $ 10,286 |  | 10,286 |  |  | 10,218 |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax | (50) | $ 78 | 36 | 136 |  |  |
Cost of Goods and Services Sold | 869 | 777 | 2,465 | 2,265 |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax | 14 | 16 | 52 | 34 |  |  |
Interest Expense | 86 | 95 | 265 | 294 |  |  |
Other Operating Income (Expense), Net | (64) |  | (9) |  |  |  |
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax | (5) | (9) | (14) | (25) |  |  |
Derivative Asset, Fair Value, Gross Asset | 325 |  | 325 |  |  | 321 |
Derivative Liability, Fair Value, Gross Liability | 1,116 |  | 1,116 |  |  | 1,037 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Equity Securities, FV-NI | 0 |  | 0 |  |  | 1 |
Derivative Asset | 179 |  | 179 |  |  | 216 |
Licensing arrangements, asset | 246 |  | 246 |  |  | 332 |
Business Combination, Contingent Consideration, Liability | 214 |  | 214 |  |  | 354 |
Licensing arrangements, liability | 262 |  | 262 |  |  | 374 |
Cash | 305 |  | 305 |  |  | 165 |
Proceeds from secured borrowings relating to royalty arrangements |  |  | 256 |  |  |  |
Debt Instrument, Fair Value Disclosure | 10,901 |  | 10,901 |  |  | 11,020 |
November 2019 Aggregate Offering [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Long-term Debt |  |  |  |  |  | 1,000 | € 900
December 2027 Notes [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Long-term Debt | $ 1,054 |  | $ 1,054 |  |  | 1,011 |
Debt Instrument, Interest Rate, Stated Percentage | 0.625% |  | 0.625% |  |  |  |
Licensing arrangement assets [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Proceeds from Royalties Received |  |  | $ (132) |  |  |  |
Increase (Decrease) in Fair Value Adjustments on Other Assets (Liabilities) Carried at Fair Value under Fair Value Option |  |  | 9 |  |  |  |
Licensing arrangement liabilities [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Payments for Royalties |  |  | (165) |  |  |  |
Increase (Decrease) in Fair Value Adjustments on Other Assets (Liabilities) Carried at Fair Value under Fair Value Option |  |  | 7 |  |  |  |
Euro-denominated outstanding debt [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure | $ 1,050 |  | 1,050 |  |  | 1,004 |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Licensing arrangements, asset | 396 |  | 396 |  |  |  |
Licensing arrangements, liability | 413 |  | 413 |  |  |  |
Net Investment Hedging [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Notional Value of Outstanding Net Investment Hedges | 1,885 |  | 1,885 |  |  | 1,950 |
Fair Value, Measurements, Recurring [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Money Market Funds, at Carrying Value | 1,716 |  | 1,716 |  |  | 50 |
Equity Securities, FV-NI | 0 |  | 0 |  |  | 1 |
Derivative Asset | 325 |  | 325 |  |  | 321 |
Licensing arrangements, asset | 396 |  | 396 |  |  | 518 |
Assets, Fair Value Disclosure | 2,438 |  | 2,438 |  |  | 890 |
Derivative Liability | 1,116 |  | 1,116 |  |  | 1,037 |
Business Combination, Contingent Consideration, Liability | 214 |  | 214 |  |  | 354 |
Licensing arrangements, liability | 413 |  | 413 |  |  | 571 |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 1,743 |  | 1,743 |  |  | 1,963 |
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 | 1,716 |  | 1,716 |  |  | 50 |
Equity Securities, FV-NI | 0 |  | 0 |  |  | 1 |
Derivative Asset | 0 |  | 0 |  |  | 0 |
Licensing arrangements, asset | 0 |  | 0 |  |  | 0 |
Assets, Fair Value Disclosure | 1,717 |  | 1,717 |  |  | 51 |
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 | 325 |  | 325 |  |  | 321 |
Licensing arrangements, asset | 0 |  | 0 |  |  | 0 |
Assets, Fair Value Disclosure | 325 |  | 325 |  |  | 321 |
Derivative Liability | 1,116 |  | 1,116 |  |  | 1,037 |
Business Combination, Contingent Consideration, Liability | 0 |  | 0 |  |  | 0 |
Licensing arrangements, liability | 0 |  | 0 |  |  | 0 |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 1,116 |  | 1,116 |  |  | 1,037 |
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 | 396 |  | 396 |  |  | 518 |
Assets, Fair Value Disclosure | 396 |  | 396 |  |  | 518 |
Derivative Liability | 0 |  | 0 |  |  | 0 |
Business Combination, Contingent Consideration, Liability | 214 |  | 214 |  |  | 354 |
Licensing arrangements, liability | 413 |  | 413 |  |  | 571 |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 627 |  | 627 |  |  | 925 |
Designated as Hedging Instrument [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Derivative Instruments in Hedges, Assets, at Fair Value | 270 |  | 270 |  |  | 288 |
Derivative Instruments in Hedges, Liabilities, at Fair Value | 1,058 |  | 1,058 |  |  | 1,009 |
Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Derivative Instruments in Hedges, Liabilities, at Fair Value | $ 1,042 |  | $ 1,042 |  |  | 998 |
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Forward Currency Contracts, Time to Maturity | units | 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 | $ 90 |  | $ 90 |  |  | 72 |
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 | 179 |  | 179 |  |  | 216 |
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 | 6 |  | 6 |  |  | 3 |
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 | 9 |  | 9 |  |  | 8 |
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 | 29 | (202) | 20 | (334) |  |  |
Foreign Currency Transaction Gain (Loss), before Tax | (30) | (4) | (33) | 0 |  |  |
Net currency exchange gain (loss) | (1) | (207) | (13) | (334) |  |  |
Not Designated as Hedging Instrument [Member] | BTG Acquisition [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Payments for Hedge, Investing Activities |  |  |  | 294 |  |  |
Not Designated as Hedging Instrument [Member] | BTG Acquisition [Member] | Other Nonoperating Income (Expense) [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments |  | (207) |  | (323) |  |  |
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount | 4,283 |  | 4,283 |  |  | 4,377 |
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 | 56 |  | 56 |  |  | 33 |
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 | $ 58 |  | $ 58 |  |  | 29 |
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | BTG Acquisition [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Derivative, Cash Received on Hedge |  |  |  | 4,303 | £ 3,312 |  |
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% |  |  |  |
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% |  |  |  |
Minimum [Member] | Licensing arrangement assets [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Discount Rate, Fair Value Input | 11.00% |  | 11.00% |  |  |  |
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% |  |  |  |
Maximum [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% |  |  |  |
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% |  |  |  |
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 | $ 79 |  | $ 79 |  |  |  |
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) |  | (5) |  |  |  |
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount | 4,118 |  | 4,118 |  |  | 3,891 |
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 | (64) | 101 | 47 | 176 |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax | 14 | (23) | (11) | (40) |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax | (50) | 78 | 36 | 136 |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | (20) | (22) | (70) | (47) |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax | 4 | 5 | 16 | 10 |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax | (15) | (17) | (55) | (36) |  |  |
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 | 1 | 4 | 3 |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax | 0 | 0 | (1) | (1) |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax | 1 | 1 | 3 | 2 |  |  |
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 | 17 |  | 17 |  |  |  |
Net Investment Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount | 991 |  | 991 |  |  | 953 |
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 | (21) | 64 | (4) | 92 |  |  |
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, Tax | 5 | (14) | (21) | (21) |  |  |
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax | (16) | 50 | (25) | 71 |  |  |
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), Reclassification, before Tax | (6) | (12) | (18) | (33) |  |  |
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), after Reclassification, Tax | 1 | 3 | 4 | 7 |  |  |
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax | (5) | $ (9) | (14) | $ (25) |  |  |
Net Investment Hedging [Member] | Designated as Hedging Instrument [Member] | foreign currency denominated in debt [Member] |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount | 894 |  | 894 |  |  | $ 997 |
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 | (46) |  | (44) |  |  |  |
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, Tax | 10 |  | 13 |  |  |  |
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax | (36) |  | (31) |  |  |  |
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), Reclassification, before Tax | 0 |  | 0 |  |  |  |
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), after Reclassification, Tax | 0 |  | 0 |  |  |  |
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax | $ 0 |  | $ 0 |  |  |  |

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