Benefit Plans - Significant Assumptions Used, Postretirement Benefits (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pre Medicare
Defined Benefit Plan Disclosure [Line Items]
Weighted average healthcare cost trend rate	8.45%	7.88%	6.58%
Weighted average healthcare cost trend rate	7.88%	6.58%	6.04%
Trend rate graded down to ultimate rate	4.50%	4.50%	4.50%
Post Medicare
Defined Benefit Plan Disclosure [Line Items]
Weighted average healthcare cost trend rate	9.73%	8.65%	6.89%
Weighted average healthcare cost trend rate	8.65%	6.89%	6.29%
Trend rate graded down to ultimate rate	4.50%	4.50%	4.50%
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation discount rate	5.68%	5.02%	5.19%
Net periodic postretirement benefit cost discount rate for fiscal year	5.02%	5.19%	2.98%