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v3.20.1

Long-Term Debt (Schedule of Long-term Debt) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Debt Instrument [Line Items] |  |
Principal Amount | $ 4,485 | $ 3,500
Unamortized Premium (Discount) and Debt Issuance Costs | (53) | (55)
Net, Long-term Debt | $ 4,432 | 3,445
Senior Notes [Member] | 3.60% Senior Notes Due 2022 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2022 |
Stated interest rate (percent) | 3.60% |
Principal Amount | $ 250 | 250
Unamortized Premium (Discount) and Debt Issuance Costs | (1) | (1)
Net, Long-term Debt | $ 249 | 249
Senior Notes [Member] | 3.6% Senior Notes Due 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2026 |
Stated interest rate (percent) | 3.60% |
Principal Amount | $ 750 | 750
Unamortized Premium (Discount) and Debt Issuance Costs | (7) | (8)
Net, Long-term Debt | $ 743 | 742
Senior Notes [Member] | Loan related to tax-exempt waste disposal revenue bonds due 2027 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2027 |
Principal Amount | $ 11 | 11
Unamortized Premium (Discount) and Debt Issuance Costs | 0 | 0
Net, Long-term Debt | $ 11 | 11
Senior Notes [Member] | 6 1/2% GO Zone Senior Notes Due 2029 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2029 |
Stated interest rate (percent) | 6.50% |
Principal Amount | $ 100 | 100
Unamortized Premium (Discount) and Debt Issuance Costs | (1) | (1)
Net, Long-term Debt | $ 99 | 99
Senior Notes [Member] | 2035 GO Zone 6 1/2% Notes [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2035 |
Stated interest rate (percent) | 6.50% |
Principal Amount | $ 89 | 89
Unamortized Premium (Discount) and Debt Issuance Costs | (1) | (1)
Net, Long-term Debt | $ 88 | 88
Senior Notes [Member] | 2035 IKE Zone 6 1/2% Notes [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2035 |
Stated interest rate (percent) | 6.50% |
Principal Amount | $ 65 | 65
Unamortized Premium (Discount) and Debt Issuance Costs | 0 | 0
Net, Long-term Debt | $ 65 | 65
Senior Notes [Member] | 5.0% Senior Notes Due 2046 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2046 |
Stated interest rate (percent) | 5.00% |
Principal Amount | $ 700 | 700
Unamortized Premium (Discount) and Debt Issuance Costs | (23) | (23)
Net, Long-term Debt | $ 677 | 677
Senior Notes [Member] | 4.375% Senior Notes Due 2047 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2047 |
Stated interest rate (percent) | 4.375% |
Principal Amount | $ 500 | 500
Unamortized Premium (Discount) and Debt Issuance Costs | (9) | (9)
Net, Long-term Debt | $ 491 | 491
Senior Notes [Member] | 3.50% Senior Notes Due 2032 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2032 |
Stated interest rate (percent) | 3.50% |
Principal Amount | $ 250 | 250
Unamortized Premium (Discount) and Debt Issuance Costs | (1) | (1)
Net, Long-term Debt | $ 249 | 249
Senior Notes [Member] | 1.625% Senior Notes Due 2029 |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity | 2029 |
Stated interest rate (percent) | 1.625% |
Principal Amount | $ 770 | 785
Unamortized Premium (Discount) and Debt Issuance Costs | (10) | (11)
Net, Long-term Debt | 760 | 774
Revolving Credit Facility [Member] | Line of Credit [Member] | Credit Agreement [Member] |  |
Debt Instrument [Line Items] |  |
Principal Amount | 1,000 | 0
Unamortized Premium (Discount) and Debt Issuance Costs | 0 | 0
Net, Long-term Debt | $ 1,000 | $ 0

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + 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)(1) -URI http://asc.fasb.org/extlink&oid=109500613&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(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: 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=6877327&loc=d3e13212-122682 Reference 4: 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=6876686&loc=d3e534808-122878 + Details
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