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v3.21.1

Debt (Narrative) (Details) | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Feb. 28, 2021 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2021 USD ($) Extension | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Short-term debt |  |  | $ 0 |  | $ 0
Carrying value |  |  | 29,680,000,000 |  | 29,471,000,000
Long-term debt repaid |  |  | 5,042,000,000 | $ 1,000,000,000 |
Loss on early extinguishment of debt |  |  | 649,000,000 | $ 0 |
Loss on extinguishment of debt, premiums and fees |  |  | 623,000,000 |  |
Write-off of amortized debt discounts and issuance costs, debt extinguishment |  |  | 26,000,000 |  |
Accrued interest on long-term debt |  |  | $ 277,000,000 |  | $ 458,000,000
Senior Notes [Member] | USD Denominated Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount | $ 5,500,000,000 |  |  |  |
Senior Notes [Member] | USD Denominated Notes Due 2032 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount | $ 1,750,000,000 |  |  |  |
Debt instrument, interest rate, stated percentage | 2.45% |  |  |  |
Senior Notes [Member] | USD Denominated Notes Due 2041 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount | $ 1,500,000,000 |  |  |  |
Debt instrument, interest rate, stated percentage | 3.40% |  |  |  |
Senior Notes [Member] | USD Denominated Notes Due 2051 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount | $ 1,250,000,000 |  |  |  |
Debt instrument, interest rate, stated percentage | 3.70% |  |  |  |
Senior Notes [Member] | USD Denominated Notes Due 2061 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount | $ 1,000,000,000.00 |  |  |  |
Debt instrument, interest rate, stated percentage | 4.00% |  |  |  |
Senior Notes [Member] | USD Denominated Notes, 3.490 Percent, Due 2022 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 3.49% |  |
Long-term debt repaid |  |  | $ 1,000,000,000.0 |  |
Revolving Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, covenant, consolidated EBITDA to interest expense ratio, minimum |  |  | 4.0 |  |
Debt instrument, consolidated EBITDA to interest expense ratio |  |  | 9.2 |  |
Revolving Credit Facility [Member] | Line of Credit [Member] | Revolving Credit Facility Due August 2023 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, term |  |  | 5 years |  |
Face amount |  |  | $ 3,000,000,000.0 |  |
Debt instrument, number of extensions | Extension |  |  | 2 |  |
Debt instrument, extension term |  |  | 1 year |  |
Proceeds from issuance of debt |  | $ 3,000,000,000.0 |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Line of Credit [Member] | Revolving Credit Facility Due August 2023 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.00% |  |
Debt Instrument, Redemption, Period One [Member] | Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, redemption price, percentage | 101.00% |  |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition Reflects the difference between the fair value of payments made to legally extinguish a debt and its carrying value at that time. This item excludes the write-off of amounts previously capitalized as debt issuance costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629 + Details
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- 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=120520924&loc=SL6031897-161870 Reference 2: 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 3: 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 4: 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
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