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Debt And Related Expenses (Schedule Of Debt Instruments and Balances) (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Debt Instrument [Line Items] |  |
Net premium on debentures and notes | $ 49 | $ 64
Debt issuance costs | (30) | (30)
Total debt | 6,140 | 6,155
Less amount classified as short-term debt | 475 | 483
Long-term debt | 5,665 | 5,672
5.25% due September 15, 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 472 | $ 472
Charge on early retirement of debt, cash retirement costs | 5.25% | 5.25%
Debt, maturity date | Sep. 15, 2024 |
5.85% due December 15, 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 485 | $ 485
Charge on early retirement of debt, cash retirement costs | 5.85% | 5.85%
Debt, maturity date | Dec. 15, 2025 |
7.50% due September 15, 2027 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 73 | $ 73
Charge on early retirement of debt, cash retirement costs | 7.50% | 7.50%
Debt, maturity date | Sep. 15, 2027 |
5.25% due October 15, 2027 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 390 | $ 390
Charge on early retirement of debt, cash retirement costs | 5.25% | 5.25%
Debt, maturity date | Oct. 15, 2027 |
5.875% due June 15, 2028 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 325 | $ 325
Charge on early retirement of debt, cash retirement costs | 5.875% | 5.875%
Debt, maturity date | Jun. 15, 2028 |
4.50% due January 15, 2030 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 585 | $ 585
Charge on early retirement of debt, cash retirement costs | 4.50% | 4.50%
Debt, maturity date | Jan. 15, 2030 |
7.875% due September 30, 2031 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 675 | $ 675
Charge on early retirement of debt, cash retirement costs | 7.875% | 7.875%
Debt, maturity date | Sep. 30, 2031 |
7.95% due April 15, 2032 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 366 | $ 366
Charge on early retirement of debt, cash retirement costs | 7.95% | 7.95%
Debt, maturity date | Apr. 15, 2032 |
5.60% due July 15, 2041 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 1,250 | $ 1,250
Charge on early retirement of debt, cash retirement costs | 5.60% | 5.60%
Debt, maturity date | Jul. 15, 2041 |
4.75% due May 15, 2042 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 750 | $ 750
Charge on early retirement of debt, cash retirement costs | 4.75% | 4.75%
Debt, maturity date | May 15, 2042 |
5.00% due June 15, 2045 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 750 | $ 750
Charge on early retirement of debt, cash retirement costs | 5.00% | 5.00%
Debt, maturity date | Jun. 15, 2045 |

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