Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Long-Term Debt [Abstract]
Schedule Of Long-Term Debt	At December 31, 2021 2020 Fixed Rate Secured: 4.10% Senior Notes, due June 1, 2022 $ 400 $ 4007.00% Debentures due September 1, 2022 482 4822.75% Senior Notes due June 1, 2024 500 5002.95% Senior Notes due April 1, 2025 350 3500.55% Senior Notes due October 1, 2025 450 4503.86% Senior Notes, Series A, due December 3, 2025 174 1743.86% Senior Notes, Series B, due January 14, 2026 38 383.70% Senior Notes due November 15, 2028 650 6505.75% Senior Notes due March 15, 2029 318 3182.75% Senior Notes due May 15, 2030 700 4007.00% Senior Notes due May 1, 2032 494 4947.25% Senior Notes due January 15, 2033 323 3237.50% Senior Notes due September 1, 2038 300 3005.25% Senior Notes due September 30, 2040 475 4754.55% Senior Notes due December 1, 2041 400 4005.30% Senior Notes due June 1, 2042 348 3483.75% Senior Notes due April 1, 2045 550 5503.80% Senior Notes due September 30, 2047 325 3254.10% Senior Notes due November 15, 2048 450 4503.80% Senior Notes, due June 1, 2049 500 5003.10% Senior Notes, due September 15, 2049 700 7003.70% Senior Notes due May 15, 2050 400 4002.70% Senior Notes due November 15, 2051 500 -5.35% Senior Notes due October 1, 2052 300 300Total long-term debt 10,127 9,327Unamortized discount and debt issuance costs (95) (98)Less amount due currently (882) - Long-term debt, less amounts due currently $ 9,150 $ 9,229
Schedule Of Long-Term Debt Maturity	Year Amount2022 $ 8822023 -2024 5002025 9742026 38Thereafter 7,733Unamortized discount and debt issuance costs (95)Total $ 10,032