XML 71 R61.htm IDEA: XBRL DOCUMENT
v3.21.2

DEBT AND CREDIT FACILITIES - Summary of Debt Carrying Amount (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |
Total debt, net | $ 27,686 | $ 31,402
Less: current portion of long-term debt and other obligations, net | 2,511 | 2,757
Total long-term debt, net | 25,175 | 28,645
Senior Notes and Medium-Term Notes |  |
Debt Instrument [Line Items] |  |
Total debt, net | $ 26,565 | 30,295
Senior Notes | 4.50% Senior Unsecured Notes Due April 2021 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 4.50% |
Total debt, net | $ 0 | 1,000
Senior Notes | 0.15% LIBOR Senior Unsecured Notes Due September 2021 |  |
Debt Instrument [Line Items] |  |
Total debt, net | $ 0 | 499
Senior Notes | 0.15% LIBOR Senior Unsecured Notes Due September 2021 | LIBOR |  |
Debt Instrument [Line Items] |  |
Interest Rate, variable rate | 0.15% |
Senior Notes | 4.40% Senior Unsecured Notes Due December 2021 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 4.40% |
Total debt, net | $ 0 | 1,249
Senior Notes | 1.95% Senior Unsecured Notes Due March 2022 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 1.95% |
Total debt, net | $ 500 | 499
Senior Notes | 3.25% Senior Unsecured Notes Due September 2022 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 3.25% |
Total debt, net | $ 999 | 998
Senior Notes | 2.50% Senior Unsecured Notes Due September 2023 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 2.50% |
Total debt, net | $ 748 | 748
Senior Notes | 0.52% LIBOR Senior Unsecured Notes Due September 2023 |  |
Debt Instrument [Line Items] |  |
Total debt, net | $ 499 | 498
Senior Notes | 0.52% LIBOR Senior Unsecured Notes Due September 2023 | LIBOR |  |
Debt Instrument [Line Items] |  |
Interest Rate, variable rate | 0.52% |
Senior Notes | 0.75% Senior Unsecured Notes Due September 2023 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 0.75% |
Total debt, net | $ 1,994 | 1,992
Senior Notes | 3.70% Senior Unsecured Notes Due April 2024 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 3.70% |
Total debt, net | $ 1,747 | 1,746
Senior Notes | 3.50% Senior Unsecured Notes Due February 2025 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 3.50% |
Total debt, net | $ 1,747 | 1,746
Senior Notes | 3.65% Senior Unsecured Notes Due March 2026 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 3.65% |
Total debt, net | $ 2,738 | 2,737
Senior Notes | 2.95% Senior Unsecured Notes Due March 2027 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 2.95% |
Total debt, net | $ 1,246 | 1,246
Senior Notes | 1.20% Senior Unsecured Notes Due October 2027 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 1.20% |
Total debt, net | $ 746 | 745
Senior Notes | 1.65% Senior Unsecured Notes Due October 2030 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 1.65% |
Total debt, net | $ 992 | 992
Senior Notes | 4.60% Senior Unsecured Notes Due September 2035 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 4.60% |
Total debt, net | $ 992 | 991
Senior Notes | 4.00% Senior Unsecured Notes Due September 2036 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 4.00% |
Total debt, net | $ 742 | 741
Senior Notes | 2.60% Senior Unsecured Notes Due October 2040 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 2.60% |
Total debt, net | $ 987 | 986
Senior Notes | 5.65% Senior Unsecured Notes Due December 2041 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 5.65% |
Total debt, net | $ 996 | 996
Senior Notes | 4.80% Senior Unsecured Notes Due April 2044 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 4.80% |
Total debt, net | $ 1,736 | 1,735
Senior Notes | 4.50% Senior Unsecured Notes Due February 2045 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 4.50% |
Total debt, net | $ 1,733 | 1,732
Senior Notes | 4.75% Senior Unsecured Notes Due March 2046 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 4.75% |
Total debt, net | $ 2,220 | 2,219
Senior Notes | 4.15% Senior Unsecured Notes Due March 2047 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 4.15% |
Total debt, net | $ 1,727 | 1,726
Senior Notes | 2.80% Senior Unsecured Notes Due October 2050 |  |
Debt Instrument [Line Items] |  |
Interest Rate, stated percentage | 2.80% |
Total debt, net | $ 1,476 | 1,476
Medium-term Notes | Variable Term Loan Note Due October 2023 |  |
Debt Instrument [Line Items] |  |
Total debt, net | 0 | 998
Liability related to future royalties |  |
Debt Instrument [Line Items] |  |
Total debt, net | $ 1,121 | $ 1,107

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=gild_SeniorNotesAndMediumTermNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A450SeniorUnsecuredNotesDueApril2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A015LIBORSeniorUnsecuredNotesDueSeptember2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A440SeniorUnsecuredNotesDueDecember2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A195SeniorUnsecuredNotesDueMarch2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A325SeniorUnsecuredNotesDueSeptember2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A250SeniorUnsecuredNotesDueSeptember2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A052LIBORSeniorUnsecuredNotesDueSeptember2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A075SeniorUnsecuredNotesDueSeptember2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A370SeniorUnsecuredNotesDueApril2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A350SeniorUnsecuredNotesDueFebruary2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A365SeniorUnsecuredNotesDueMarch2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A295SeniorUnsecuredNotesDueMarch2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A120SeniorUnsecuredNotesDueOctober2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A165SeniorUnsecuredNotesDueOctober2030Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A460SeniorUnsecuredNotesDueSeptember2035Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A400SeniorUnsecuredNotesDueSeptember2036Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A260SeniorUnsecuredNotesDueOctober2040Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A565SeniorUnsecuredNotesDueDecember2041Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A480SeniorUnsecuredNotesDueApril2044Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A450SeniorUnsecuredNotesDueFebruary2045Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A475SeniorUnsecuredNotesDueMarch2046Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A415SeniorUnsecuredNotesDueMarch2047Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_A280SeniorUnsecuredNotesDueOctober2050Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_MediumTermNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gild_VariableTermLoanNoteDueOctober2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_NotesPayableOtherPayablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |