Employee Benefit Plans - MEC - Plan Assumptions (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Healthcare cost trend rate assumed for next year	6.44%	6.50%
Rate that the cost trend rate gradually declines to	5.00%	5.00%
Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.35%	4.54%	2.95%
Discount rate	5.58%	2.95%	2.59%
Expected return on plan assets	5.84%	4.20%	3.35%
MEC
Defined Benefit Plan Disclosure [Line Items]
Healthcare cost trend rate assumed for next year	6.20%	6.50%
Rate that the cost trend rate gradually declines to	5.00%	5.00%
Year that the rate reaches the rate it is assumed to remain at	2028	2028
MEC | Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.45%	5.60%	2.95%
Discount rate	5.60%	2.95%	2.65%
Expected return on plan assets	6.80%	5.30%	4.00%
U.S. | Pension
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.36%	5.65%	2.98%
Rate of compensation increase	3.00%	3.00%	2.75%
Interest crediting rates for cash balance plan, year one	4.19%	3.25%	2.45%
Interest crediting rates for cash balance plan, year two	4.58%	4.25%	2.56%
Interest crediting rates for cash balance plan, year three	4.58%	4.25%	2.56%
Interest crediting rates for cash balance plan, year four	3.73%	3.65%	2.83%
Interest crediting rates for cash balance plan, year five		3.65%	2.83%
Interest crediting rates for cash balance plan, year six			2.83%
Discount rate	5.65%	2.98%	2.60%
Expected return on plan assets	6.10%	4.30%	5.39%
Rate of compensation increase	3.00%	2.75%	2.75%
Interest crediting rates for cash balance plan	4.19%	3.25%	2.45%
U.S. | MEC | Pension
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.45%	5.70%	3.05%
Rate of compensation increase	3.00%	3.00%	2.75%
Interest crediting rates for cash balance plan, year one	3.50%	3.74%	1.19%
Interest crediting rates for cash balance plan, year two	3.50%	3.74%	1.19%
Interest crediting rates for cash balance plan, year three	3.50%	3.74%	1.19%
Interest crediting rates for cash balance plan, year four	3.50%	3.74%	1.19%
Interest crediting rates for cash balance plan, year five		3.74%	1.19%
Interest crediting rates for cash balance plan, year six			1.19%
Discount rate	5.70%	3.05%	2.75%
Expected return on plan assets	6.35%	4.30%	5.60%
Rate of compensation increase	3.00%	2.75%	2.75%
Interest crediting rates for cash balance plan	3.50%	3.74%	1.19%
After-tax | MEC | Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	5.52%	4.21%	2.39%