Employee Benefit Plans - Asset Allocations (Details)	Dec. 31, 2021
Minimum | Other Postretirement | Debt securities | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	70.00%
Minimum | Other Postretirement | Debt securities | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	25.00%
Minimum | Other Postretirement | Debt securities | NV Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	67.00%
Minimum | Other Postretirement | Equity securities | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	20.00%
Minimum | Other Postretirement | Equity securities | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	65.00%
Minimum | Other Postretirement | Equity securities | NV Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	12.00%
Minimum | United States | Pension | Debt securities | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	55.00%
Minimum | United States | Pension | Debt securities | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	60.00%
Minimum | United States | Pension | Debt securities | NV Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	85.00%
Minimum | United States | Pension | Equity securities | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	25.00%
Minimum | United States | Pension | Equity securities | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	20.00%
Minimum | United Kingdom | Pension | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	60.00%
Minimum | United Kingdom | Pension | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	10.00%
Minimum | United Kingdom | Pension | Other
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	15.00%
Maximum | Other Postretirement | Debt securities | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	80.00%
Maximum | Other Postretirement | Debt securities | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	35.00%
Maximum | Other Postretirement | Debt securities | NV Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	88.00%
Maximum | Other Postretirement | Equity securities | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	30.00%
Maximum | Other Postretirement | Equity securities | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	75.00%
Maximum | Other Postretirement | Equity securities | NV Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	33.00%
Maximum | Other Postretirement | Limited partnership interests | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	1.00%
Maximum | Other Postretirement | Other | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	1.00%
Maximum | Other Postretirement | Other | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	5.00%
Maximum | United States | Pension | Debt securities | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	85.00%
Maximum | United States | Pension | Debt securities | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	80.00%
Maximum | United States | Pension | Debt securities | NV Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	100.00%
Maximum | United States | Pension | Equity securities | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	35.00%
Maximum | United States | Pension | Equity securities | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	40.00%
Maximum | United States | Pension | Equity securities | NV Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	15.00%
Maximum | United States | Pension | Limited partnership interests | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	10.00%
Maximum | United States | Pension | Other | PAC
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	10.00%
Maximum | United States | Pension | Other | MidAmerican Energy
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	15.00%
Maximum | United Kingdom | Pension | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	70.00%
Maximum | United Kingdom | Pension | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	20.00%
Maximum | United Kingdom | Pension | Other
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	25.00%