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Long-Term Debt (Tables)
 3 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
Schedule Of Long-Term Debt
Long-term debt consists of the following:
March 31, 2022December 31, 2021
Principal
Amount		Unamortized
Discount
and Debt
Issuance
Costs		Net
Long-term
Debt		Principal
Amount		Unamortized
Discount
and Debt
Issuance
Costs		Net
Long-term
Debt
3.60% senior notes due 2022 (the "3.60% 2022 Senior Notes")
$250 $— $250 $250 $— $250 
0.875% senior notes due 2024 (the "0.875% 2024 Senior Notes")
300 (2)298 300 (2)298 
3.60% senior notes due 2026 (the "3.60% 2026 Senior Notes")
750 (5)745 750 (5)745 
Loan related to tax-exempt waste disposal revenue bonds due 202711 — 11 11 — 11 
1.625% senior notes due 2029 (the "1.625% 2029 Senior Notes")
778 (8)770 794 (8)786 
3.375% senior notes due 2030 (the "3.375% 2030 Senior Notes")
300 (3)297 300 (4)296 
3.50% senior notes due 2032 (the "3.50% 2032 GO Zone Refunding Senior Notes")
250 (1)249 250 (1)249 
2.875% senior notes due 2041 (the "2.875% 2041 Senior Notes")
350 (11)339 350 (11)339 
5.0% senior notes due 2046 (the "5.0% 2046 Senior Notes")
700 (21)679 700 (22)678 
4.375% senior notes due 2047 (the "4.375% 2047 Senior Notes")
500 (8)492 500 (8)492 
3.125% senior notes due 2051 (the "3.125% 2051 Senior Notes")
600 (23)577 600 (23)577 
3.375% senior notes due 2061 (the "3.375% 2061 Senior Notes")
450 (19)431 450 (19)431 
8.73% RS Cogen debt due 2022 (the "8.73% 2022 RS Cogen Debt")
14 — 14 19 — 19 
Term loans due 2026 (the "2026 Term Loans")14 — 14 9 — 9 
Total long-term debt5,267 (101)5,166 5,283 (103)5,180 
Less current portion:
3.60% 2022 Senior Notes
(250)— (250)(250)— (250)
8.73% 2022 RS Cogen Debt
(14)— (14)(19)— (19)
Long-term debt, net of current portion$5,003 $(101)$4,902 $5,014 $(103)$4,911