Fair Value Measurements - EEGH (Details) - Recurring - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	$ 8,824	$ 10,843
Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	231	237
EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	57	16
Derivative liability	(20)	(3)
EEGH | Money market mutual funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market mutual funds	42
EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	14	13
Level 1
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	7,742	9,160
Level 1 | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	231	237
Level 1 | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	56	13
Derivative liability	0	0
Level 1 | EEGH | Money market mutual funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market mutual funds	42
Level 1 | EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	14	13
Level 2
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	1,217	1,637
Level 2 | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	0	0
Level 2 | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	1	3
Derivative liability	(20)	(3)
Level 2 | EEGH | Money market mutual funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market mutual funds	0
Level 2 | EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	0	0
Level 3
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, fair value	59	93
Level 3 | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	0	0
Level 3 | 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 | EEGH | Money market mutual funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market mutual funds	0
Level 3 | EEGH | Investment funds
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment funds	0	0
Commodity derivatives
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets	477	302
Derivative liability	(218)	(266)
Commodity derivatives | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets	1
Commodity derivatives | Level 1 | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets	0
Commodity derivatives | Level 2 | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets	1
Commodity derivatives | Level 3 | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets	0
Foreign currency exchange rate derivatives
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets		3
Derivative liability	(21)	(3)
Foreign currency exchange rate derivatives | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets		3
Derivative liability	(20)	(3)
Foreign currency exchange rate derivatives | Level 1 | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets		0
Derivative liability	0	0
Foreign currency exchange rate derivatives | Level 2 | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets		3
Derivative liability	(20)	(3)
Foreign currency exchange rate derivatives | Level 3 | EEGH
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative assets		0
Derivative liability	$ 0	$ 0