Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule Of Long-Term Debt

Long-term debt consisted of the following at December 31:

	December 31, 2021						December 31, 2020
	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	$	(1)	$	249
0.875% senior notes due 2024 (the "0.875% 2024 Senior Notes")	300		(2)		298		—		—		—
3.60% senior notes due 2026 (the "3.60% 2026 Senior Notes")	750		(5)		745		750		(6)		744
Loan related to tax-exempt waste disposal revenue bonds due 2027	11		—		11		11		—		11
1.625% senior notes due 2029 (the "1.625% 2029 Senior Notes")	794		(8)		786		859		(10)		849
3.375% senior notes due 2030 (the "3.375% 2030 Senior Notes")	300		(4)		296		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		—		—		—
5.0% senior notes due 2046 (the "5.0% 2046 Senior Notes")	700		(22)		678		700		(23)		677
4.375% senior notes due 2047 (the "4.375% 2047 Senior Notes")	500		(8)		492		500		(9)		491
3.125% senior notes due 2051 (the "3.125% 2051 Senior Notes")	600		(23)		577		—		—		—
3.375% senior notes due 2061 (the "3.375% 2061 Senior Notes")	450		(19)		431		—		—		—
8.73% RS Cogen debt due 2022 (the "8.73% 2022 RS Cogen Debt")	19		—		19		—		—		—
Term loan 2026 (the "2026 Term Loan")	9		—		9		—		—		—
Total long-term debt	5,283		(103)		$	5,180	3,620		(54)		3,566
Less current portion:
3.60% 2022 Senior Notes	(250)		—		(250)		—		—		—
8.73% 2022 RS Cogen Debt	(19)		—		(19)		—		—		—
Long-term debt, net of current portion	$	5,014	$	(103)	$	4,911	$	3,620	$	(54)	$	3,566