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Equity (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Accumulated other comprehensive income (loss), beginning | $ 0 | $ (92) | $ (169)
Other comprehensive income (loss), before reclassifications | (260) | 84 | 63
Amounts reclassified from AOCI | 23 | 7 | 11
Total other comprehensive income (loss), net of tax | (237) | 91 | 74
Less other comprehensive (income) loss attributable to noncontrolling interests | 19 | 1 | (7)
AOCI Impact of Disposal of a Business |  |  | 10
Accumulated other comprehensive income (loss), ending | (218) | 0 | (92)
AOCI Including Portion Attributable to Noncontrolling Interest, Net Of Tax | (14) |  |
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 | 14 | 8 | (27)
Other comprehensive income (loss), before reclassifications | 0 | 0 | 0
Amounts reclassified from AOCI | 6 | 6 | 12
Total other comprehensive income (loss), net of tax | 6 | 6 | 12
Less other comprehensive (income) loss attributable to noncontrolling interests | 0 | 0 | 0
AOCI Impact of Disposal of a Business |  |  | 23
Accumulated other comprehensive income (loss), ending | 20 | 14 | 8
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 | 5 | 20 | 11
Other comprehensive income (loss), before reclassifications | (84) | (11) | 12
Amounts reclassified from AOCI | 10 | (4) | (3)
Total other comprehensive income (loss), net of tax | (74) | (15) | 9
Less other comprehensive (income) loss attributable to noncontrolling interests | 0 | 0 | 0
AOCI Impact of Disposal of a Business |  |  | 0
Accumulated other comprehensive income (loss), ending | (69) | 5 | 20
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 | 25 | (75) | (114)
Other comprehensive income (loss), before reclassifications | (133) | 95 | 37
Amounts reclassified from AOCI | 7 | 5 | 2
Total other comprehensive income (loss), net of tax | (126) | 100 | 39
Less other comprehensive (income) loss attributable to noncontrolling interests | 0 | 0 | 0
AOCI Impact of Disposal of a Business |  |  | 0
Accumulated other comprehensive income (loss), ending | (101) | 25 | (75)
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 | (49) | (49) | (42)
Other comprehensive income (loss), before reclassifications | (44) | (1) | 13
Amounts reclassified from AOCI | 0 | 0 | 0
Total other comprehensive income (loss), net of tax | (44) | (1) | 13
Less other comprehensive (income) loss attributable to noncontrolling interests | 19 | 1 | (7)
AOCI Impact of Disposal of a Business |  |  | (13)
Accumulated other comprehensive income (loss), ending | (74) | (49) | (49)
AOCI Including Portion Attributable to Noncontrolling Interest, Net Of Tax | (14) |  |
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 | 5 | 4 | 3
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
AOCI Impact of Disposal of a Business |  |  | 0
Accumulated other comprehensive income (loss), ending | 6 | $ 5 | $ 4
AOCI Including Portion Attributable to Noncontrolling Interest, Net Of Tax | $ 0 |  |

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