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Equity (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), beginning | $ (218) | $ 0 | $ (92)
Other comprehensive income (loss), before reclassifications | 52 | (260) | 84
Amounts reclassified from AOCI | 16 | 23 | 7
Total other comprehensive income (loss), net of tax | 68 | (237) | 91
Less other comprehensive (income) loss attributable to noncontrolling interests | (3) | 19 | 1
Accumulated other comprehensive income (loss), ending | (153) | (218) | 0
AOCI Including Portion Attributable to Noncontrolling Interest, Net Of Tax | (10) |  |
Net Unrealized Gains (Losses) on Cash Flow Hedges |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), beginning | 20 | 14 | 8
Other comprehensive income (loss), before reclassifications | 0 | 0 | 0
Amounts reclassified from AOCI | 2 | 6 | 6
Total other comprehensive income (loss), net of tax | 2 | 6 | 6
Less other comprehensive (income) loss attributable to noncontrolling interests | 0 | 0 | 0
Accumulated other comprehensive income (loss), ending | 22 | 20 | 14
AOCI Including Portion Attributable to Noncontrolling Interest, Net Of Tax | 0 |  |
Net Unrealized Gains (Losses) on Available for Sale Securities |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), beginning | (69) | 5 | 20
Other comprehensive income (loss), before reclassifications | 17 | (84) | (11)
Amounts reclassified from AOCI | 13 | 10 | (4)
Total other comprehensive income (loss), net of tax | 30 | (74) | (15)
Less other comprehensive (income) loss attributable to noncontrolling interests | 0 | 0 | 0
Accumulated other comprehensive income (loss), ending | (39) | (69) | 5
AOCI Including Portion Attributable to Noncontrolling Interest, Net Of Tax | 0 |  |
Defined Benefit Pension and Other Benefits Plans |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), beginning | (101) | 25 | (75)
Other comprehensive income (loss), before reclassifications | 21 | (133) | 95
Amounts reclassified from AOCI | 1 | 7 | 5
Total other comprehensive income (loss), net of tax | 22 | (126) | 100
Less other comprehensive (income) loss attributable to noncontrolling interests | 0 | 0 | 0
Accumulated other comprehensive income (loss), ending | (79) | (101) | 25
AOCI Including Portion Attributable to Noncontrolling Interest, Net Of Tax | 0 |  |
Net Unrealized Gains (Losses) on Foreign Currency Translation |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), beginning | (74) | (49) | (49)
Other comprehensive income (loss), before reclassifications | 13 | (44) | (1)
Amounts reclassified from AOCI | 0 | 0 | 0
Total other comprehensive income (loss), net of tax | 13 | (44) | (1)
Less other comprehensive (income) loss attributable to noncontrolling interests | (3) | 19 | 1
Accumulated other comprehensive income (loss), ending | (64) | (74) | (49)
AOCI Including Portion Attributable to Noncontrolling Interest, Net Of Tax | (10) |  |
Other Comprehensive Income Related to Equity Method Investees |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), beginning | 6 | 5 | 4
Other comprehensive income (loss), before reclassifications | 1 | 1 | 1
Amounts reclassified from AOCI | 0 | 0 | 0
Total other comprehensive income (loss), net of tax | 1 | 1 | 1
Less other comprehensive (income) loss attributable to noncontrolling interests | 0 | 0 | 0
Accumulated other comprehensive income (loss), ending | 7 | $ 6 | $ 5
AOCI Including Portion Attributable to Noncontrolling Interest, Net Of Tax | $ 0 |  |

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