Derivatives - Schedule of Notional and Gross Fair Values of Derivatives (Details) shares in Thousands, $ in Thousands, MMBTU in Millions, Boe in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2026 USD ($) Boe MMBTU company shares	Dec. 31, 2025 USD ($) MMBTU Boe company shares
Derivative assets:
Derivative assets - fair value	$ 387,420	$ 409,467
Less: Master netting agreements	(106,024)	(74,138)
Less: Cash collateral received	(201,326)	(183,387)
Net derivative assets	80,070	151,942
Derivative liabilities:
Gross amounts recognized	407,529	385,973
Less: Master netting agreements	(106,024)	(74,138)
Less: Cash collateral received	(640)	(27,502)
Net derivative liabilities	300,865	284,333
Derivatives not Designated as Hedging Instruments
Derivative Instruments
Notional Amount	23,326,366	23,840,799
Derivative assets:
Derivative assets - fair value	379,019	369,470
Derivative liabilities:
Gross amounts recognized	$ 392,824	$ 385,834
Derivatives not Designated as Hedging Instruments | Performance-Based RSUs
Derivative liabilities:
Derivative liability granted number of shares (in shares) | shares	349	349
Derivatives not Designated as Hedging Instruments | Crude Oil
Derivative liabilities:
Derivative, nonmonetary notional amount, energy measure | Boe	15	16
Derivatives not Designated as Hedging Instruments | Natural Gas
Derivative liabilities:
Derivative, nonmonetary notional amount, energy measure | MMBTU	272	364
Interest rate contracts | Derivatives not Designated as Hedging Instruments
Derivative Instruments
Notional Amount	$ 17,722,136	$ 18,987,277
Derivative assets:
Derivative assets - fair value	253,126	258,561
Derivative liabilities:
Gross amounts recognized	253,662	256,731
Interest rate contracts | Cash Flow Hedging | Derivative Instruments Designated as Hedging Instruments
Derivative Instruments
Notional Amount	4,000,000	4,250,000
Derivative assets:
Derivative assets - fair value	8,401	39,997
Derivative liabilities:
Gross amounts recognized	14,705	139
Commodity contracts | Derivatives not Designated as Hedging Instruments
Derivative Instruments
Notional Amount	0	0
Derivative assets:
Derivative assets - fair value	65,094	66,022
Derivative liabilities:
Gross amounts recognized	66,873	72,158
Foreign exchange contracts | Derivatives not Designated as Hedging Instruments
Derivative Instruments
Notional Amount	5,232,565	4,550,101
Derivative assets:
Derivative assets - fair value	60,269	44,340
Derivative liabilities:
Gross amounts recognized	56,384	43,160
Credit contracts | Derivatives not Designated as Hedging Instruments
Derivative Instruments
Notional Amount	371,665	303,421
Derivative assets:
Derivative assets - fair value	6	25
Derivative liabilities:
Gross amounts recognized	130	51
Equity contracts | Derivatives not Designated as Hedging Instruments
Derivative Instruments
Notional Amount	0	0
Derivative assets:
Derivative assets - fair value	524	522
Derivative liabilities:
Gross amounts recognized	$ 15,775	$ 13,734
Private Companies | Derivatives not Designated as Hedging Instruments
Derivative liabilities:
Number of companies that issued the equity (issuers portion only) | company	9	9