Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement [Abstract]

Schedule of Share-based Payment Award, Valuation Assumptions

The following table provides the assumptions used to calculate the grant date fair value of the TSR portion of the PSU awards for 2025, 2024 and 2023:

Grant Date	Risk-Free Interest Rate	Volatility
February 11, 2025	4.19%	21.51%
February 13, 2024	4.35%	20.32%
February 14, 2023	4.24%	25.09%

Stock Compensation Expense and Tax Impacts

	2025		2024		2023
	Millions
Compensation Cost included in O&M Expense	$	43	$	40	$	18
Income Tax Benefit Recognized in Consolidated Statements of Operations	$	12	$	11	$	5

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity

Changes in RSUs for the year ended December 31, 2025 are summarized as follows:

	Shares		Weighted Average Grant Date Fair Value		Weighted Average Remaining Years Contractual Term		Aggregate Intrinsic Value
Non-vested as of January 1, 2025		448,790	$	61.03
Granted		326,735	$	83.74
Vested		354,257	$	69.34
Canceled/Forfeited		9,265	$	72.79
Non-vested as of December 31, 2025		412,003	$	71.63		0.7	$	33,083,841

Share-based Payment Arrangement, Performance Shares, Outstanding Activity

Changes in PSUs for the year ended December 31, 2025 are summarized as follows:

	Shares		Weighted Average Grant Date Fair Value		Weighted Average Remaining Years Contractual Term		Aggregate Intrinsic Value
Non-vested as of January 1, 2025		473,853	$	66.59
Granted		319,884	$	80.29
Vested		369,333	$	69.70
Canceled/Forfeited		19,499	$	70.99
Non-vested as of December 31, 2025		404,905	$	74.36		1.6	$	32,513,872