Debt Instrument, Unamortized Premium, Discount and Debt Issuance Cost

No definition available.

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- Definition

Represents the amount of eligible property that was subject to lien of mortgage (based on original cost).

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
Period Type:	instant

- Definition

The average effective interest rate during the reporting period.

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Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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+ Details

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- Definition

Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Long-term Debt - NPC (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Long-term Debt - NPC (Details) - USD ($) $ in Millions	Jan. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Par value		$ 49,746
Total long-term debt		49,762	$ 49,866
2027 and thereafter		38,506
Credit facilities		11,281	11,030
Subsidiary debt
Debt Instrument [Line Items]
Par value		36,545
NPC
Debt Instrument [Line Items]
Par value		2,534
Total long-term debt		2,499	2,496
Credit facilities		400	400
Proceeds from long-term debt		0	$ 718	$ 495
NPC \| Subsidiary debt
Debt Instrument [Line Items]
Total long-term debt		2,499
2027 and thereafter		2,534
Unamortized discount and debt issuance costs		(35)
NPC \| Line of credit \| NPC Secured Delayed Draw Term Loan Facility, due 2024 \| Subsequent event
Debt Instrument [Line Items]
Credit facilities	$ 300
Proceeds from long-term debt	$ 200
Interest rate	0.55%
NV Energy \| Subsidiary debt
Debt Instrument [Line Items]
Par value		3,701
2027 and thereafter		3,051
NV Energy \| NPC \| 3.700% Series CC, due 2029
Debt Instrument [Line Items]
Par value		500
NV Energy \| NPC \| 2.400% Series DD, due 2030
Debt Instrument [Line Items]
Par value		425
NV Energy \| NPC \| 6.650% Series N, due 2036
Debt Instrument [Line Items]
Par value		367
NV Energy \| NPC \| 6.750% Series R, due 2037
Debt Instrument [Line Items]
Par value		349
NV Energy \| NPC \| 5.375% Series X, due 2040
Debt Instrument [Line Items]
Par value		250
NV Energy \| NPC \| 5.450% Series Y, due 2041
Debt Instrument [Line Items]
Par value		250
NV Energy \| NPC \| 3.125% Series EE, due 2050
Debt Instrument [Line Items]
Par value		300
NV Energy \| NPC \| 1.875% Pollution Control Bonds Series 2017A, due 2032
Debt Instrument [Line Items]
Par value		40
NV Energy \| NPC \| 1.650% Pollution Control Bonds Series 2017, due 2036
Debt Instrument [Line Items]
Par value		40
NV Energy \| NPC \| 1.650% Pollution Control Bonds Series 2017B, due 2039
Debt Instrument [Line Items]
Par value		$ 13
NV Energy \| NPC \| Subsidiary debt \| 3.700% Series CC, due 2029
Debt Instrument [Line Items]
Stated rate		3.70%	3.70%
Total long-term debt		$ 497	$ 496
NV Energy \| NPC \| Subsidiary debt \| 2.400% Series DD, due 2030
Debt Instrument [Line Items]
Stated rate		2.40%	2.40%
Total long-term debt		$ 422	$ 422
NV Energy \| NPC \| Subsidiary debt \| 6.650% Series N, due 2036
Debt Instrument [Line Items]
Stated rate		6.65%	6.65%
Total long-term debt		$ 359	$ 359
NV Energy \| NPC \| Subsidiary debt \| 6.750% Series R, due 2037
Debt Instrument [Line Items]
Stated rate		6.75%	6.75%
Total long-term debt		$ 346	$ 346
NV Energy \| NPC \| Subsidiary debt \| 5.375% Series X, due 2040
Debt Instrument [Line Items]
Stated rate		5.375%	5.375%
Total long-term debt		$ 248	$ 248
NV Energy \| NPC \| Subsidiary debt \| 5.450% Series Y, due 2041
Debt Instrument [Line Items]
Stated rate		5.45%	5.45%
Total long-term debt		$ 239	$ 237
NV Energy \| NPC \| Subsidiary debt \| 3.125% Series EE, due 2050
Debt Instrument [Line Items]
Stated rate		3.125%	3.125%
Total long-term debt		$ 297	$ 297
NV Energy \| NPC \| Subsidiary debt \| 1.875% Pollution Control Bonds Series 2017A, due 2032
Debt Instrument [Line Items]
Stated rate		1.875%	1.875%
Total long-term debt		$ 39	$ 39
NV Energy \| NPC \| Subsidiary debt \| 1.650% Pollution Control Bonds Series 2017, due 2036
Debt Instrument [Line Items]
Stated rate		1.65%	1.65%
Total long-term debt		$ 39	$ 39
NV Energy \| NPC \| Subsidiary debt \| 1.650% Pollution Control Bonds Series 2017B, due 2039
Debt Instrument [Line Items]
Stated rate		1.65%	1.65%
Total long-term debt		$ 13	$ 13
NPC
Debt Instrument [Line Items]
Par value		2,534
Eligible property subject to lien of mortgages		$ 9,400
NPC \| Subsidiary debt \| 3.700% Series CC, due 2029
Debt Instrument [Line Items]
Stated rate		3.70%
Par value		$ 500
NPC \| Subsidiary debt \| 2.400% Series DD, due 2030
Debt Instrument [Line Items]
Stated rate		2.40%
Par value		$ 425
NPC \| Subsidiary debt \| 6.650% Series N, due 2036
Debt Instrument [Line Items]
Stated rate		6.65%
Par value		$ 367
NPC \| Subsidiary debt \| 6.750% Series R, due 2037
Debt Instrument [Line Items]
Stated rate		6.75%
Par value		$ 349
NPC \| Subsidiary debt \| 5.375% Series X, due 2040
Debt Instrument [Line Items]
Stated rate		5.375%
Par value		$ 250
NPC \| Subsidiary debt \| 5.450% Series Y, due 2041
Debt Instrument [Line Items]
Stated rate		5.45%
Par value		$ 250
NPC \| Subsidiary debt \| 3.125% Series EE, due 2050
Debt Instrument [Line Items]
Stated rate		3.125%
Par value		$ 300
NPC \| Subsidiary debt \| 1.875% Pollution Control Bonds Series 2017A, due 2032
Debt Instrument [Line Items]
Stated rate		1.875%
Par value		$ 40