Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of the Components of the Company's Intangible Assets Subject to Amortization

The following tables summarize the components of intangible assets subject to amortization:

Year ended December 31, 2025	PPAs		Leasehold Rights		Emission Allowances		Other		Total
(In millions)
January 1, 2025	$	3,265	$	86	$	17	$	19	$	3,387
Acquisitions (a)	351		—		—		—		351
Other	—		—		—		4		4
December 31, 2025	3,616		86		17		23		3,742
Less accumulated amortization	(1,322)		(46)		(6)		(8)		(1,382)
Net carrying amount	$	2,294	$	40	$	11	$	15	$	2,360

(a) The weighted average life of acquired intangibles was 14 years for PPAs.

Year ended December 31, 2024	PPAs		Leasehold Rights		Emission Allowances		Other		Total
(In millions)
January 1, 2024	$	3,265	$	86	$	17	$	15	$	3,383
Other	—		—		—		4		4
December 31, 2024	3,265		86		17		19		3,387
Less accumulated amortization	(1,140)		(42)		(5)		(7)		(1,194)
Net carrying amount	$	2,125	$	44	$	12	$	12	$	2,193