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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2022
Fair Value Disclosures [Abstract]  
Schedule Of Carrying And Fair Values Of Long-Term Debt The carrying and fair values of the Company's long-term debt at December 31, 2022 and 2021 are summarized in the table below. The Company's long-term debt instruments are publicly-traded. A market approach, based upon quotes from financial reporting services, is used to measure the fair value of the Company's long-term debt. Because the Company's long-term debt instruments may not be actively traded, the inputs used to measure the fair value of the Company's long-term debt are classified as Level 2 inputs within the fair value hierarchy.
20222021
Carrying
Value		Fair
Value		Carrying
Value		Fair
Value
3.60% 2022 Senior Notes
$— $— $250 $252 
0.875% 2024 Senior Notes
299 279 298 287 
3.60% 2026 Senior Notes
746 705 745 805 
Loan related to tax-exempt waste disposal revenue bonds due 2027
11 11 11 11 
1.625% 2029 Senior Notes
743 606 786 824 
3.375% 2030 Senior Notes
297 258 296 319 
3.50% 2032 GO Zone Refunding Senior Notes
249 233 249 271 
2.875% 2041 Senior Notes
339 231 339 339 
5.00% 2046 Senior Notes
679 583 678 885 
4.375% 2047 Senior Notes
492 379 492 592 
3.125% 2051 Senior Notes
578 373 577 582 
3.375% 2061 Senior Notes
431 267 431 432 
8.73% 2022 RS Cogen Debt
— — 19 19 
2026 Term Loans15 15 9 9