Fair Value Measurements - EEGH (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	$ 19	$ 14
Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	6,188	8,824
Recurring | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	268	231
Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	81	57
Derivative liability	(8)	(20)
Recurring | EEGH | Money market mutual funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market mutual funds	62	42
Recurring | EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	19	14
Level 1 | Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	5,523	7,742
Level 1 | Recurring | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	268	231
Level 1 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	81	56
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	62	42
Level 1 | Recurring | EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	19	14
Level 2 | Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	685	1,217
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	1
Derivative liability	(8)	(20)
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	11	59
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
Commodity derivatives | Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets	95	477
Derivative liability	(182)	(218)
Commodity derivatives | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets		1
Commodity derivatives | Level 1 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets		0
Commodity derivatives | Level 2 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets		1
Commodity derivatives | Level 3 | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets		0
Foreign currency exchange rate derivatives | Recurring
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative liability	(8)	(21)
Foreign currency exchange rate derivatives | Recurring | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative liability	(8)	(20)
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	(8)	(20)
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