Fair Value Measurements - EEGH (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	$ 18	$ 19
Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	3,196	6,188
Recurring | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	313	268
Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	52	81
Derivative liability	(23)	(8)
Recurring | EEGH | Money market mutual funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market mutual funds	34	62
Recurring | EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	18	19
Level 1 | Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	2,447	5,523
Level 1 | Recurring | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	313	268
Level 1 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	52	81
Derivative liability	0	0
Level 1 | Recurring | EEGH | Money market mutual funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market mutual funds	34	62
Level 1 | Recurring | EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	18	19
Level 2 | Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	762	685
Level 2 | Recurring | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	0	0
Level 2 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	0	0
Derivative liability	(23)	(8)
Level 2 | Recurring | EEGH | Money market mutual funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market mutual funds	0	0
Level 2 | Recurring | EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	0	0
Level 3 | Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	9	11
Level 3 | Recurring | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	0	0
Level 3 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	0	0
Derivative liability	0	0
Level 3 | Recurring | EEGH | Money market mutual funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market mutual funds	0	0
Level 3 | Recurring | EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	0	0
Foreign currency exchange rate derivatives | Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative liability	(23)	(8)
Foreign currency exchange rate derivatives | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative liability	(23)	(8)
Foreign currency exchange rate derivatives | Level 1 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative liability	0	0
Foreign currency exchange rate derivatives | Level 2 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative liability	(23)	(8)
Foreign currency exchange rate derivatives | Level 3 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative liability	$ 0	$ 0