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Debt (Schedule Of Outstanding Debt) (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021 | Apr. 09, 2021 | Apr. 08, 2021
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Current portion of long-term debt | $ 367 | $ 17 |  |
Short-term debt | 1,311 | 17 |  |
Long-term debt | 10,854 | 10,950 |  |
Long-term debt, net | 10,487 | 10,933 |  |
Commercial Paper |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Short-term debt | 944 | 0 | $ 2,000 | $ 1,500
3.30% Senior Debt Obligations Due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 350 | 349 |  |
Interest rate | 3.30% |  |  |
4.05% Senior Debt Obligations Due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 250 | 249 |  |
Interest rate | 4.05% |  |  |
3.50% Senior Debt Obligations Due 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 599 | 599 |  |
Interest rate | 3.50% |  |  |
3.875% Senior Debt Obligations Due 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 997 | 997 |  |
Interest rate | 3.875% |  |  |
3.50% Senior Debt Obligations Due 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 498 | 498 |  |
Interest rate | 3.50% |  |  |
1.349% Senior Debt Obligations Due 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 581 | 629 |  |
Interest rate | 1.349% |  |  |
3.75% Senior Debt Obligations Due 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 598 | 598 |  |
Interest rate | 3.75% |  |  |
4.375% Senior Debt Obligations Due 2029 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 1,499 | 1,499 |  |
Interest rate | 4.375% |  |  |
1.979% Senior Debt Obligations Due 2030 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 571 | 614 |  |
Interest rate | 1.979% |  |  |
2.250% Senior Debt Obligations Due 2030 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 739 | 739 |  |
Interest rate | 2.25% |  |  |
2.375% Senior Debt Obligations Due 2031 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 397 | $ 397 |  |
Interest rate | 2.375% | 2.375% |  |
5.875% Senior Debt Obligations Due 2033 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 298 | $ 298 |  |
Interest rate | 5.875% |  |  |
4.75% Senior Debt Obligations Due 2039 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 495 | 495 |  |
Interest rate | 4.75% |  |  |
4.35% Senior Debt Obligation Due 2047 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 493 | 493 |  |
Interest rate | 4.35% |  |  |
4.20% Senior Debt Obligations Due 2048 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 593 | 593 |  |
Interest rate | 4.20% |  |  |
4.90% Senior Debt Obligations Due 2049 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 1,238 | 1,238 |  |
Interest rate | 4.90% |  |  |
2.90% Senior Debt Obligations Due 2051 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 346 | $ 346 |  |
Interest rate | 2.90% | 2.90% |  |
5.70% Mortgage Due 2035 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 308 | $ 316 |  |
Interest rate | 5.70% |  |  |
Other |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 4 | $ 3 |  |

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