Note 8 - Accumulated Other Comprehensive Income/Loss - Schedule of Reclassification (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
Sep. 30, 2023 |
Sep. 30, 2022 |
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| Balance | $ 13,194 | $ 12,710 | $ 12,163 | $ 14,161 | ||||||||||||||
| Total other comprehensive income/(loss) | 20 | [1] | 9 | [1] | 85 | [2] | 82 | [2] | ||||||||||
| Balance | 14,004 | 11,743 | 14,004 | 11,743 | ||||||||||||||
| Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | ||||||||||||||||||
| Balance | (373) | (629) | (378) | (658) | ||||||||||||||
| Other comprehensive income/(loss) before reclassifications | (1) | 0 | 5 | 0 | ||||||||||||||
| Amounts reclassified from accumulated other comprehensive income/(loss) [b] | [3] | (1) | 15 | (2) | 44 | |||||||||||||
| Total other comprehensive income/(loss) | (2) | 15 | 3 | 44 | ||||||||||||||
| Balance | (375) | (614) | (375) | (614) | ||||||||||||||
| Accumulated Foreign Currency Adjustment Attributable to Parent [Member] | ||||||||||||||||||
| Balance | (160) | (212) | (204) | (256) | ||||||||||||||
| Other comprehensive income/(loss) before reclassifications | 22 | (6) | 66 | 38 | ||||||||||||||
| Amounts reclassified from accumulated other comprehensive income/(loss) [b] | [3] | 0 | 0 | 0 | 0 | |||||||||||||
| Total other comprehensive income/(loss) | 22 | (6) | 66 | 38 | ||||||||||||||
| Balance | (138) | (218) | (138) | (218) | ||||||||||||||
| Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | ||||||||||||||||||
| Balance | [4] | 16 | 0 | 0 | 0 | |||||||||||||
| Other comprehensive income/(loss) before reclassifications | [4] | 0 | 0 | 16 | 0 | |||||||||||||
| Amounts reclassified from accumulated other comprehensive income/(loss) [b] | [3] | 0 | 0 | [4] | 0 | [4] | 0 | [4] | ||||||||||
| Total other comprehensive income/(loss) | 0 | 0 | [4] | 16 | [4] | 0 | [4] | |||||||||||
| Balance | [4] | 16 | 0 | 16 | 0 | |||||||||||||
| AOCI Attributable to Parent [Member] | ||||||||||||||||||
| Balance | [5] | (517) | (841) | (582) | (914) | |||||||||||||
| Other comprehensive income/(loss) before reclassifications | 21 | (6) | 87 | 38 | ||||||||||||||
| Amounts reclassified from accumulated other comprehensive income/(loss) [b] | [3] | (1) | 15 | (2) | 44 | |||||||||||||
| Total other comprehensive income/(loss) | [5] | 20 | 9 | 85 | 82 | |||||||||||||
| Balance | [5] | $ (497) | $ (832) | $ (497) | $ (832) | |||||||||||||
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