Changes in Fair Value of Plan Assets

Net periodic benefit cost (credit) for the plans included the following components for the years ended December 31 (in millions):


	Pension						Other Postretirement
	2021		2020		2019		2021		2020		2019

Service cost	$	30	$	17	$	16	$	12	$	7	$	8
Interest cost	78		93		111		19		21		27
Expected return on plan assets	(134)		(140)		(154)		(22)		(34)		(40)
Settlement	3		—		—		—		—		—
Net amortization	25		32		31		(3)		(4)		(6)
Net periodic benefit cost (credit)	$	2	$	2	$	4	$	6	$	(10)	$	(11)

Net periodic benefit cost for the UK Plan included the following components for the years ended December 31 (in millions):


	2021		2020		2019

Service cost	$	16	$	16	$	16
Interest cost	31		40		49
Expected return on plan assets	(111)		(101)		(100)
Settlement	10		17		26
Net amortization	55		43		46
Net periodic benefit cost	$	1	$	15	$	37

The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Plan assets at fair value, beginning of year	$	2,824	$	2,656	$	744	$	742
Employer contributions	13		13		14		3
Participant contributions	—		—		9		8
Actual return on plan assets	234		373		53		40
Settlement	(134)		—		—		—
Benefits paid	(142)		(218)		(51)		(49)
Plan assets at fair value, end of year	$	2,795	$	2,824	$	769	$	744

The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):


	2021		2020

Plan assets at fair value, beginning of year	$	2,334	$	2,151
Employer contributions	28		56
Participant contributions	1		1
Actual return on plan assets	148		181
Settlement	(51)		(63)
Benefits paid	(72)		(67)
Foreign currency exchange rate changes	(25)		75
Plan assets at fair value, end of year	$	2,363	$	2,334

Changes in Projected Benefit Obligations

The following table is a reconciliation of the benefit obligations for the years ended December 31 (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Benefit obligation, beginning of year	$	3,077	$	2,878	$	758	$	673
Service cost	30		17		12		7
Interest cost	78		93		19		21
Participant contributions	—		—		9		8
Actuarial (gain) loss	(132)		226		(35)		61
Amendment	—		—		2		—
Settlement	(134)		—		—		—
Acquisition	—		81		—		37
Benefits paid	(142)		(218)		(51)		(49)
Benefit obligation, end of year	$	2,777	$	3,077	$	714	$	758
Accumulated benefit obligation, end of year	$	2,713	$	2,999

The following table is a reconciliation of the benefit obligation for the years ended December 31 (in millions):


	2021		2020

Benefit obligation, beginning of year	$	2,205	$	2,019
Service cost	16		16
Interest cost	31		40
Participant contributions	1		1
Actuarial (gain) loss	(105)		188
Settlement	(51)		(63)

Benefits paid	(72)		(67)
Foreign currency exchange rate changes	(22)		71
Benefit obligation, end of year	$	2,003	$	2,205
Accumulated benefit obligation, end of year	$	1,778	$	1,963

Schedule of Net Funded Status

The funded status of the plans and the amounts recognized on the Consolidated Balance Sheets as of December 31 are as follows (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Plan assets at fair value, end of year	$	2,795	$	2,824	$	769	$	744
Benefit obligation, end of year	2,777		3,077		714		758
Funded status	$	18	$	(253)	$	55	$	(14)

Amounts recognized on the Consolidated Balance Sheets:
Other assets	$	204	$	43	$	60	$	20
Other current liabilities	(13)		(13)		—		—
Other long-term liabilities	(173)		(283)		(5)		(34)
Amounts recognized	$	18	$	(253)	$	55	$	(14)

Benefit Obligations in Excess of Fair Value of Plan Assets

The fair value of plan assets, projected benefit obligation and accumulated benefit obligation for (1) pension and other postretirement benefit plans with a projected benefit obligation in excess of the fair value of plan assets and (2) pension plans with an accumulated benefit obligation in excess of the fair value of plan assets as of December 31 are as follows (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Fair value of plan assets	$	—	$	1,782	$	137	$	417

Projected benefit obligation	$	186	$	2,069	$	142	$	451

Fair value of plan assets	$	—	$	1,064

Accumulated benefit obligation	$	185	$	1,341

The funded status of the UK Plan and the amounts recognized on the Consolidated Balance Sheets as of December 31 are as follows (in millions):


	2021		2020

Plan assets at fair value, end of year	$	2,363	$	2,334
Benefit obligation, end of year	2,003		2,205
Funded status	$	360	$	129

Amounts recognized on the Consolidated Balance Sheets:
Other assets	$	360	$	129

Net Periodic Benefit Costs Not Yet Recognized

The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Net loss (gain)	$	343	$	612	$	(34)	$	34
Prior service credit	(1)		(1)		(1)		(9)
Regulatory deferrals	11		2		2		3
Total	$	353	$	613	$	(33)	$	28

A reconciliation of the amounts not yet recognized as components of net periodic benefit cost for the years ended December 31, 2021 and 2020 is as follows (in millions):


					Accumulated
					Other
	Regulatory		Regulatory		Comprehensive
	Asset		Liability		Loss		Total
Pension
Balance, December 31, 2019	$	661	$	(33)	$	24	$	652
Net (gain) loss arising during the year	(30)		13		10		(7)


Net amortization	(31)		—		(1)		(32)
Total	(61)		13		9		(39)
Balance, December 31, 2020	600		(20)		33		613
Net gain arising during the year	(177)		(44)		(10)		(231)

Settlement	(9)		5		—		(4)
Net amortization	(24)		—		(1)		(25)
Total	(210)		(39)		(11)		(260)
Balance, December 31, 2021	$	390	$	(59)	$	22	$	353


					Accumulated
					Other
	Regulatory		Regulatory		Comprehensive
	Asset		Liability		Loss		Total
Other Postretirement
Balance, December 31, 2019	$	4	$	(32)	$	(3)	$	(31)
Net loss arising during the year	36		12		7		55

Net amortization	7		(3)		—		4
Total	43		9		7		59
Balance, December 31, 2020	47		(23)		4		28
Net gain arising during the year	(40)		(22)		(3)		(65)
Net prior service cost arising during the year	1		—		—		1
Net amortization	3		—		—		3
Total	(36)		(22)		(3)		(61)
Balance, December 31, 2021	$	11	$	(45)	$	1	$	(33)

The portion of the funded status of the UK Plan not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):


	2021		2020

Net loss	$	400	$	612
Prior service cost	5		6
Total	$	405	$	618

A reconciliation of the amounts not yet recognized as components of net periodic benefit cost, which are included in accumulated other comprehensive loss on the Consolidated Balance Sheets, for the years ended December 31 is as follows (in millions):


	2021		2020

Balance, beginning of year	$	618	$	549
Net loss arising during the year	(143)		108

Settlement	(10)		(17)
Net amortization	(55)		(43)
Foreign currency exchange rate changes	(5)		21
Total	(213)		69
Balance, end of year	$	405	$	618

Expected Benefit Payments

Weighted-average assumptions used to determine benefit obligations and net periodic benefit cost were as follows:


	Pension						Other Postretirement
	2021		2020		2019		2021		2020		2019

Benefit obligations as of December 31:
Discount rate	2.98	%	2.60	%	3.32	%	2.95	%	2.59	%	3.24	%
Rate of compensation increase	2.75	%	2.75	%	2.75	%	N/A		N/A		N/A
Interest crediting rates for cash balance plan
2019	N/A		N/A		3.22	%	N/A		N/A		N/A
2020	N/A		2.44	%	2.94	%	N/A		N/A		N/A
2021	2.45	%	2.25	%	2.94	%	N/A		N/A		N/A
2022	2.56	%	2.25	%	3.02	%	N/A		N/A		N/A
2023	2.56	%	2.65	%	3.02	%	N/A		N/A		N/A
2024 and beyond	2.83	%	2.65	%	3.02	%	N/A		N/A		N/A

Net periodic benefit cost for the years ended December 31:
Discount rate	2.60	%	3.32	%	4.25	%	2.59	%	3.24	%	4.21	%
Expected return on plan assets	5.39	%	5.94	%	6.48	%	3.35	%	5.42	%	6.39	%
Rate of compensation increase	2.75	%	2.75	%	2.75	%	N/A		N/A		N/A
Interest crediting rate for cash balance plan	2.45	%	2.44	%	3.22	%	N/A		N/A		N/A

In establishing its assumption as to the expected return on plan assets, the Company utilizes the asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets.


	2021		2020
Assumed healthcare cost trend rates as of December 31:
Healthcare cost trend rate assumed for next year	6.00	%	6.30	%
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	2025		2025

Assumptions used to determine benefit obligations and net periodic benefit cost were as follows:


	2021		2020		2019

Benefit obligations as of December 31:
Discount rate	1.95	%	1.40	%	2.10	%
Rate of compensation increase	3.45	%	3.05	%	3.30	%
Rate of future price inflation	2.95	%	2.55	%	2.80	%

Net periodic benefit cost for the years ended December 31:
Discount rate	1.40	%	2.10	%	2.90	%
Expected return on plan assets	4.85	%	5.00	%	5.10	%
Rate of compensation increase	3.05	%	3.30	%	3.55	%
Rate of future price inflation	2.55	%	2.80	%	3.05	%

The expected benefit payments to participants in the Company's pension and other postretirement benefit plans for 2022 through 2026 and for the five years thereafter are summarized below (in millions):


	Projected Benefit
	Payments
			Other
	Pension		Postretirement

2022	$	210	$	54
2023	203		54
2024	195		54
2025	193		53
2026	193		51
2027-2031	837		229

Employer contributions to the UK Plan are expected to be £12 million during 2022. The expected benefit payments to participants in the UK Plan for 2022 through 2026 and for the five years thereafter, excluding lump sum settlement elections and using the foreign currency exchange rate as of December 31, 2021, are summarized below (in millions):


2022	$	73
2023	75
2024	77
2025	79
2026	81
2027-2031	436

Allocation of Plan Assets

The target allocations (percentage of plan assets) for the Company's pension and other postretirement benefit plan assets are as follows as of December 31, 2021:


		Other
	Pension	Postretirement
	%	%
PacifiCorp:
Debt securities(1)	55-85	70-80
Equity securities(1)	25-35	20-30
Limited partnership interests	0-10	0-1


MidAmerican Energy:
Debt securities(1)	60-80	25-35
Equity securities(1)	20-40	65-75

Other	0-15	0-5

NV Energy:
Debt securities(1)	85-100	67-88
Equity securities(1)	0-15	12-33

(1)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.

The target allocations (percentage of plan assets) for the UK Plan assets are as follows as of December 31, 2021:


			%
Debt securities(1)			60-70
Equity securities(1)			10-20
Real estate funds and other			15-25

(1)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds have been allocated based on the underlying investments in debt and equity securities.

Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table presents the fair value of plan assets, by major category, for the Company's defined benefit pension plans (in millions):


	Input Levels for Fair Value Measurements(1)
	Level 1		Level 2		Total
As of December 31, 2021:
Cash equivalents	$	—	$	64	$	64
Debt securities:
United States government obligations	142		—		142

Corporate obligations	—		912		912
Municipal obligations	—		66		66
Agency, asset and mortgage-backed obligations	—		93		93
Equity securities:
United States companies	135		—		135




Total assets in the fair value hierarchy	$	277	$	1,135	1,412
Investment funds(2) measured at net asset value					1,349
Limited partnership interests(3) measured at net asset value					34

Total assets measured at fair value					$	2,795

As of December 31, 2020:
Cash equivalents	$	—	$	79	$	79
Debt securities:
United States government obligations	52		—		52

Corporate obligations	—		748		748
Municipal obligations	—		69		69

Equity securities:
United States companies	224		—		224




Total assets in the fair value hierarchy	$	276	$	896	1,172
Investment funds(2) measured at net asset value					1,521
Limited partnership interests(3) measured at net asset value					88
Real estate funds measured at net asset value					43
Total assets measured at fair value					$	2,824

(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.

(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 54% and 46%, respectively, for 2021 and 69% and 31%, respectively, for 2020. Additionally, these funds are invested in United States and international securities of approximately 89% and 11%, respectively, for 2021 and 79% and 21%, respectively, for 2020.

(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.

The following table presents the fair value of plan assets, by major category, for the Company's defined benefit other postretirement plans (in millions):


	Input Levels for Fair Value Measurements(1)
	Level 1		Level 2		Total
As of December 31, 2021:
Cash equivalents	$	12	$	4	$	16
Debt securities:
United States government obligations	27		—		27

Corporate obligations	—		85		85
Municipal obligations	—		43		43
Agency, asset and mortgage-backed obligations	—		38		38
Equity securities:
United States companies	4		—		4

Investment funds(2)	394		—		394


Total assets in the fair value hierarchy	$	437	$	170	607
Investment funds(2) measured at net asset value					161
Limited partnership interests(3) measured at net asset value					1

Total assets measured at fair value					$	769

As of December 31, 2020:
Cash equivalents	$	20	$	2	$	22
Debt securities:
United States government obligations	15		—		15

Corporate obligations	—		102		102
Municipal obligations	—		82		82
Agency, asset and mortgage-backed obligations	—		47		47
Equity securities:
United States companies	6		—		6

Investment funds(2)	299		—		299

Total assets in the fair value hierarchy	$	340	$	233	573
Investment funds(2) measured at net asset value					167
Limited partnership interests(3) measured at net asset value					4

Total assets measured at fair value					$	744

(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.

(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 55% and 45%, respectively, for 2021 and 40% and 60%, respectively, for 2020. Additionally, these funds are invested in United States and international securities of approximately 88% and 12%, respectively, for 2021 and 79% and 21%, respectively, for 2020.

(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.

The following table presents the fair value of the UK Plan assets, by major category (in millions):


	Input Levels for Fair Value Measurements(1)
	Level 1		Level 2		Level 3		Total
As of December 31, 2021:
Cash equivalents	$	5	$	27	$	—	$	32
Debt securities:
United Kingdom government obligations	1,308		—		—		1,308


Equity securities:
Investment funds(2)	—		646		—		646
Real estate funds	—		—		269		269
Total	$	1,313	$	673	$	269	2,255
Investment funds(2) measured at net asset value							108
Total assets measured at fair value							$	2,363

As of December 31, 2020:
Cash equivalents	$	5	$	49	$	—	$	54
Debt securities:

United Kingdom government obligations	1,102		—		—		1,102


Equity securities:
Investment funds(2)	—		833		—		833
Real estate funds	—		—		237		237
Total	$	1,107	$	882	$	237	2,226
Investment funds(2) measured at net asset value							108
Total assets measured at fair value							$	2,334

(1)Refer to Note 15 for additional discussion regarding the three levels of the fair value hierarchy.

(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 23% and 77%, respectively, for 2021 and 40% and 60%, respectively, for 2020.

The following table presents the Company's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions):


	Input Levels for Fair Value Measurements
	Level 1		Level 2		Level 3		Other(1)		Total
As of December 31, 2021:
Assets:
Commodity derivatives	$	5	$	271	$	73	$	(47)	$	302
Foreign currency exchange rate derivatives	—		3		—		—		3
Interest rate derivatives	1		3		20		—		24
Mortgage loans held for sale	—		1,263		—		—		1,263
Money market mutual funds	554		—		—		—		554
Debt securities:
United States government obligations	232		—		—		—		232
International government obligations	—		2		—		—		2
Corporate obligations	—		90		—		—		90
Municipal obligations	—		3		—		—		3
Agency, asset and mortgage-backed obligations	—		2		—		—		2

Equity securities:
United States companies	428		—		—		—		428
International companies	7,703		—		—		—		7,703
Investment funds	237		—		—		—		237
	$	9,160	$	1,637	$	93	$	(47)	$	10,843
Liabilities:
Commodity derivatives	$	(2)	$	(113)	$	(224)	$	73	$	(266)
Foreign currency exchange rate derivatives	—		(3)		—		—		(3)
Interest rate derivatives	—		(7)		(1)		—		(8)
	$	(2)	$	(123)	$	(225)	$	73	$	(277)




As of December 31, 2020:
Assets:
Commodity derivatives	$	1	$	73	$	135	$	(21)	$	188
Foreign currency exchange rate derivatives	—		20		—		—		20
Interest rate derivatives	—		—		62		—		62
Mortgage loans held for sale	—		2,001		—		—		2,001
Money market mutual funds	873		—		—		—		873
Debt securities:
United States government obligations	200		—		—		—		200
International government obligations	—		5		—		—		5
Corporate obligations	—		73		—		—		73
Municipal obligations	—		2		—		—		2
Agency, asset and mortgage-backed obligations	—		6		—		—		6

Equity securities:
United States companies	381		—		—		—		381
International companies	5,906		—		—		—		5,906
Investment funds	201		—		—		—		201
	$	7,562	$	2,180	$	197	$	(21)	$	9,918
Liabilities:
Commodity derivatives	$	(1)	$	(90)	$	(19)	$	56	$	(54)
Foreign currency exchange rate derivatives	—		(2)		—		—		(2)
Interest rate derivatives	(5)		(60)		—		—		(65)
	$	(6)	$	(152)	$	(19)	$	56	$	(121)

(1)Represents netting under master netting arrangements and a net cash collateral receivable of $26 million and $35 million as of December 31, 2021 and 2020, respectively.

Level Three Defined Benefit Plan Assets Roll Forward

The following table reconciles the beginning and ending balances of the UK Plan assets measured at fair value using significant Level 3 inputs for the years ended December 31 (in millions):


	Real Estate Funds
	2021		2020		2019

Beginning balance	$	237	$	243	$	239
Actual return on plan assets still held at period end	35		(13)		(5)

Foreign currency exchange rate changes	(3)		7		9
Ending balance	$	269	$	237	$	243

PAC

Changes in Fair Value of Plan Assets

Net periodic benefit cost (credit) for the plans included the following components for the years ended December 31 (in millions):


	Pension						Other Postretirement
	2021		2020		2019		2021		2020		2019

Service cost	$	—	$	—	$	—	$	2	$	2	$	2
Interest cost	29		36		44		7		9		12
Expected return on plan assets	(51)		(56)		(67)		(9)		(14)		(21)
Settlement	6		—		—		—		—		—
Net amortization	21		18		11		1		3		—
Net periodic benefit cost (credit)	$	5	$	(2)	$	(12)	$	1	$	—	$	(7)

The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Plan assets at fair value, beginning of year	$	1,064	$	1,036	$	327	$	334
Employer contributions(1)	5		5		1		—
Participant contributions	—		—		6		4
Actual return on plan assets	109		124		14		15
Settlement(2)	(52)		—		—		—
Benefits paid	(68)		(101)		(24)		(26)
Plan assets at fair value, end of year	$	1,058	$	1,064	$	324	$	327

(1)Amounts represent employer contributions to the SERP.

(2)Benefits paid in the form of lump sum distributions that gave rise to the settlement accounting described above.

Changes in Projected Benefit Obligations

The following table is a reconciliation of the benefit obligations for the years ended December 31 (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Benefit obligation, beginning of year	$	1,202	$	1,167	$	307	$	304
Service cost	—		—		2		2
Interest cost	29		36		7		9
Participant contributions	—		—		6		4
Actuarial (gain) loss	(63)		100		(10)		14

Settlement(1)	(52)		—		—		—

Benefits paid	(68)		(101)		(24)		(26)
Benefit obligation, end of year	$	1,048	$	1,202	$	288	$	307
Accumulated benefit obligation, end of year	$	1,048	$	1,202

(1)Benefits paid in the form of lump sum distributions that gave rise to the settlement accounting described above.

Benefit Obligations in Excess of Fair Value of Plan Assets

The funded status of the plans and the amounts recognized on the Consolidated Balance Sheets as of December 31 are as follows (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Plan assets at fair value, end of year	$	1,058	$	1,064	$	324	$	327
Less - Benefit obligation, end of year	1,048		1,202		288		307
Funded status	$	10	$	(138)	$	36	$	20

Amounts recognized on the Consolidated Balance Sheets:
Other assets	$	63	$	8	$	36	$	20
Accrued employee expenses	(4)		(4)		—		—
Other long-term liabilities	(49)		(142)		—		—
Amounts recognized	$	10	$	(138)	$	36	$	20

Net Periodic Benefit Costs Not Yet Recognized

The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Net loss (gain)	$	298	$	455	$	(28)	$	(13)

Regulatory deferrals(1)	11		2		2		3
Total	$	309	$	457	$	(26)	$	(10)

(1)Includes $9 million of deferrals associated with 2021 pension settlement losses.

A reconciliation of the amounts not yet recognized as components of net periodic benefit cost for the years ended December 31, 2021 and 2020 is as follows (in millions):


			Accumulated
			Other
	Regulatory		Comprehensive
	Asset		Loss		Total
Pension
Balance, December 31, 2019	$	422	$	21	$	443
Net loss arising during the year	27		5		32

Net amortization	(17)		(1)		(18)

Total	10		4		14
Balance, December 31, 2020	432		25		457
Net gain arising during the year	(120)		(1)		(121)

Net amortization	(20)		(1)		(21)
Settlement	(6)		—		(6)
Total	(146)		(2)		(148)
Balance, December 31, 2021	$	286	$	23	$	309


	Regulatory
	Liability
Other Postretirement
Balance, December 31, 2019	$	(20)
Net loss arising during the year	13

Net amortization	(3)
Total	10
Balance, December 31, 2020	(10)
Net gain arising during the year	(15)

Net amortization	(1)
Total	(16)
Balance, December 31, 2021	$	(26)

Expected Benefit Payments

Assumptions used to determine benefit obligations and net periodic benefit cost were as follows:


	Pension						Other Postretirement
	2021		2020		2019		2021		2020		2019
Benefit obligations as of December 31:
Discount rate	2.90	%	2.50	%	3.25	%	2.90	%	2.50	%	3.20	%
Rate of compensation increase	N/A		N/A		N/A		N/A		N/A		N/A
Interest crediting rates for cash balance plan - non-union
2019	N/A		N/A		3.40	%	N/A		N/A		N/A
2020	N/A		2.27	%	2.27	%	N/A		N/A		N/A
2021	0.82	%	0.82	%	2.27	%	N/A		N/A		N/A
2022	0.88	%	0.82	%	2.10	%	N/A		N/A		N/A
2023	0.88	%	2.00	%	2.10	%	N/A		N/A		N/A
2024 and beyond	1.90	%	2.00	%	2.10	%	N/A		N/A		N/A

Interest crediting rates for cash balance plan - union
2019	N/A		N/A		3.15	%	N/A		N/A		N/A
2020	N/A		2.16	%	2.16	%	N/A		N/A		N/A
2021	1.42	%	1.42	%	2.16	%	N/A		N/A		N/A
2022	1.94	%	1.42	%	2.70	%	N/A		N/A		N/A
2023	1.94	%	2.40	%	2.70	%	N/A		N/A		N/A
2024 and beyond	2.30	%	2.40	%	2.70	%	N/A		N/A		N/A

Net periodic benefit cost for the years ended December 31:
Discount rate	2.50	%	3.25	%	4.25	%	2.50	%	3.20	%	4.25	%
Expected return on plan assets	6.00		6.50		7.00		2.90		4.92		6.86

The expected benefit payments to participants in PacifiCorp's pension and other postretirement benefit plans for 2022 through 2026 and for the five years thereafter are summarized below (in millions):


	Projected Benefit Payments
	Pension		Other Postretirement

2022	$	96	$	24
2023	85		23
2024	79		22
2025	76		21
2026	71		20
2027-2031	304		87

Allocation of Plan Assets

The target allocations (percentage of plan assets) for PacifiCorp's pension and other postretirement benefit plan assets are as follows as of December 31, 2021:


	Pension(1)	Other Postretirement(1)
	%	%
Debt securities(2)	55 - 85	70 - 80
Equity securities(2)	25- 35	20 - 30
Other	0 - 10	0 - 1

(1)The trust in which the PacifiCorp Retirement Plan is invested includes a separate account that is used to fund benefits for the other postretirement benefit plan. In addition to this separate account, the assets for the other postretirement benefit plan are held in Voluntary Employees' Beneficiary Association ("VEBA") trusts, each of which has its own investment allocation strategies. Target allocations for the other postretirement benefit plan include the separate account of the Retirement Plan trust and the VEBA trusts.

(2)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.

Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table presents the fair value of plan assets, by major category, for PacifiCorp's defined benefit pension plan (in millions):


	Input Levels for Fair Value Measurements
	Level 1(1)		Level 2(1)		Level 3(1)		Total
As of December 31, 2021:
Cash equivalents	$	—	$	15	$	—	$	15
Debt securities:
United States government obligations	51		—		—		51

Corporate obligations	—		299		—		299
Municipal obligations	—		22		—		22
Agency, asset and mortgage-backed obligations	—		38		—		38
Equity securities:
United States companies	61		—		—		61




Total assets in the fair value hierarchy	$	112	$	374	$	—	$	486
Investment funds(2) measured at net asset value							538
Limited partnership interests(3) measured at net asset value							34

Investments at fair value							$	1,058

As of December 31, 2020:
Cash equivalents	$	—	$	32	$	—	$	32
Debt securities:
United States government obligations	14		—		—		14
International government obligations	—		—		—		—
Corporate obligations	—		231		—		231
Municipal obligations	—		21		—		21

Equity securities:
United States companies	91		—		—		91




Total assets in the fair value hierarchy	$	105	$	284	$	—	$	389
Investment funds(2) measured at net asset value							587
Limited partnership interests(3) measured at net asset value							88

Investments at fair value							$	1,064

(1)Refer to Note 13 for additional discussion regarding the three levels of the fair value hierarchy.

(2)Investment funds are substantially comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 59% and 41%, respectively, for 2021 and 78% and 22%, respectively, for 2020, and are invested in United States and international securities of approximately 84% and 16%, respectively, for 2021 and 74% and 26%, respectively, for 2020.

(3)Limited partnership interests include several funds that invest primarily in real estate.

The following table presents the fair value of plan assets, by major category, for PacifiCorp's defined benefit other postretirement plan (in millions):


	Input Levels for Fair Value Measurements
	Level 1(1)		Level 2(1)		Level 3(1)		Total
As of December 31, 2021:
Cash and cash equivalents	$	4	$	1	$	—	$	5
Debt securities:
United States government obligations	24		—		—		24

Corporate obligations	—		79		—		79
Municipal obligations	—		15		—		15
Agency, asset and mortgage-backed obligations	—		35		—		35
Equity securities:
United States companies	4		—		—		4




Total assets in the fair value hierarchy	$	32	$	130	$	—	162
Investment funds(2) measured at net asset value							161
Limited partnership interests(3) measured at net asset value							1

Investments at fair value							$	324

As of December 31, 2020:
Cash and cash equivalents	$	8	$	1	$	—	$	9
Debt securities:
United States government obligations	11		—		—		11

Corporate obligations	—		86		—		86
Municipal obligations	—		16		—		16
Agency, asset and mortgage-backed obligations	—		44		—		44
Equity securities:
United States companies	4		—		—		4




Total assets in the fair value hierarchy	$	23	$	147	$	—	170
Investment funds(2) measured at net asset value							153
Limited partnership interests(3) measured at net asset value							4

Investments at fair value							$	327

(1)Refer to Note 13 for additional discussion regarding the three levels of the fair value hierarchy.

(2)Investment funds are substantially comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 39% and 61%, respectively, for 2021 and 38% and 62%, respectively, for 2020, and are invested in United States and international securities of approximately 90% and 10%, respectively, for 2021 and 93% and 7%, respectively, for 2020.

(3)Limited partnership interests include several funds that invest primarily in real estate, buyout, growth equity and venture capital.

The following table presents PacifiCorp's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions):


	Input Levels for Fair Value Measurements
	Level 1		Level 2		Level 3		Other(1)		Total
As of December 31, 2021:
Assets:
Commodity derivatives	$	—	$	104	$	—	$	(8)	$	96
Money market mutual funds	181		—		—		—		181
Investment funds	27		—		—		—		27
	$	208	$	104	$	—	$	(8)	$	304

Liabilities - Commodity derivatives	$	—	$	(51)	$	—	$	13	$	(38)

As of December 31, 2020:
Assets:
Commodity derivatives	$	—	$	36	$	—	$	(3)	$	33
Money market mutual funds	6		—		—		—		6
Investment funds	25		—		—		—		25
	$	31	$	36	$	—	$	(3)	$	64

Liabilities - Commodity derivatives	$	—	$	(53)	$	—	$	27	$	(26)

(1)Represents netting under master netting arrangements and a net cash collateral receivable of $5 million and $24 million as of December 31, 2021 and 2020, respectively.

Schedule of Multiemployer Plans

The following table presents PacifiCorp's participation in individually significant joint trustee and multiemployer pension plans for the years ended December 31 (dollars in millions):


		PPA of 2006 zone status or
		plan funded status percentage for
		plan years beginning July 1,					Contributions(1)
Plan name	Employer Identification Number	2021	2020	2019	Funding improvement plan	Surcharge imposed under PPA of 2006(1)	2021		2020		2019		Year contributions to plan exceeded more than 5% of total contributions(2)
Local 57 Trust Fund	87-0640888	At least 80%	At least 80%	At least 80%	None	None	$	6	$	6	$	7	2019, 2018, 2017

(1) PacifiCorp's minimum contributions to the plan are based on the amount of wages paid to employees covered by the Local 57 Trust Fund collective bargaining agreements, subject to ERISA minimum funding requirements.

(2) For the Local 57 Trust Fund, information is for plan years beginning July 1, 2019, 2018 and 2017. Information for the plan year beginning July 1, 2020 is not yet available.

MEC

Changes in Fair Value of Plan Assets

Net periodic benefit cost for the plans of MidAmerican Energy and the aforementioned affiliates included the following components for the years ended December 31 (in millions):


	Pension						Other Postretirement
	2021		2020		2019		2021		2020		2019

Service cost	$	20	$	8	$	6	$	9	$	4	$	5
Interest cost	22		25		30		8		7		10
Expected return on plan assets	(37)		(40)		(41)		(10)		(14)		(13)
Settlement	(5)		—		—		—		—		—
Net amortization	1		1		1		(4)		(5)		(3)
Net periodic benefit cost (credit)	$	1	$	(6)	$	(4)	$	3	$	(8)	$	(1)

The following table is a reconciliation of the fair value of plan assets for the years ended December 31 (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Plan assets at fair value, beginning of year	$	718	$	717	$	278	$	272
Employer contributions	8		6		10		3
Participant contributions	—		—		1		1
Actual return on plan assets	58		55		34		15
Settlement	(46)		—		—		—
Benefits paid	(34)		(60)		(15)		(13)
Plan assets at fair value, end of year	$	704	$	718	$	308	$	278

Changes in Projected Benefit Obligations

The following table is a reconciliation of the benefit obligations for the years ended December 31 (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Benefit obligation, beginning of year	$	845	$	763	$	304	$	226
Service cost	20		8		9		4
Interest cost	22		25		8		7
Participant contributions	—		—		1		1
Actuarial (gain) loss	(25)		28		(18)		42
Plan amendments	—		—		1		—
Settlement	(46)		—		—		—
Acquisition	(1)		81		(5)		37
Benefits paid	(34)		(60)		(15)		(13)
Benefit obligation, end of year	$	781	$	845	$	285	$	304
Accumulated benefit obligation, end of year	$	721	$	773

Benefit Obligations in Excess of Fair Value of Plan Assets

The funded status of the plans and the amounts recognized on the Balance Sheets as of December 31 are as follows (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Plan assets at fair value, end of year	$	704	$	718	$	308	$	278
Less - Benefit obligation, end of year	781		845		285		304
Funded status	$	(77)	$	(127)	$	23	$	(26)

Amounts recognized on the Balance Sheets:
Other assets	$	34	$	—	$	23	$	—
Other current liabilities	(7)		(7)		—		—
Other liabilities	(104)		(120)		—		(26)
Amounts recognized	$	(77)	$	(127)	$	23	$	(26)

Net Periodic Benefit Costs Not Yet Recognized

The portion of the funded status of the plans not yet recognized in net periodic benefit cost as of December 31 is as follows (in millions):


	Pension				Other Postretirement
	2021		2020		2021		2020

Net (gain) loss	$	(25)	$	18	$	2	$	45
Prior service (credit) cost	—		—		(3)		(9)

Total	$	(25)	$	18	$	(1)	$	36

A reconciliation of the amounts not yet recognized as components of net periodic benefit cost for the years ended December 31, 2021 and 2020 is as follows (in millions):


	Regulatory Asset		Regulatory Liability		Receivables (Payables) with Affiliates		Total
Pension
Balance, December 31, 2019	$	19	$	(32)	$	18	$	5
Net (gain) loss arising during the year	3		12		(1)		14

Net amortization	(1)		—		—		(1)

Total	2		12		(1)		13
Balance, December 31, 2020	21		(20)		17		18
Net loss (gain) arising during the year	2		(40)		(9)		(47)

Net amortization	(1)		—		—		(1)
Settlement	—		5		—		5
Total	1		(35)		(9)		(43)
Balance, December 31, 2021	$	22	$	(55)	$	8	$	(25)


	Regulatory Asset		Receivables (Payables) with Affiliates		Total
Other Postretirement
Balance, December 31, 2019	$	7	$	(17)	$	(10)
Net gain arising during the year	34		7		41

Net amortization	4		1		5
Total	38		8		46
Balance, December 31, 2020	45		(9)		36
Net loss arising during the year	(29)		(13)		(42)
Net prior service cost arising during the year	1		—		1
Net amortization	3		1		4
Total	(25)		(12)		(37)
Balance, December 31, 2021	$	20	$	(21)	$	(1)

Expected Benefit Payments

Assumptions used to determine benefit obligations and net periodic benefit cost were as follows:


	Pension						Other Postretirement
	2021		2020		2019		2021		2020		2019
Benefit obligations as of December 31:
Discount rate	3.05	%	2.75	%	3.40	%	2.95	%	2.65	%	3.20	%
Rate of compensation increase	2.75	%	2.75	%	2.75	%	N/A		N/A		N/A
Interest crediting rates for cash balance plan
2019	N/A		N/A		3.40	%	N/A		N/A		N/A
2020	N/A		2.27	%	2.27	%	N/A		N/A		N/A
2021	1.19	%	0.99	%	2.27	%	N/A		N/A		N/A
2022	1.19	%	0.99	%	2.27	%	N/A		N/A		N/A
2023	1.19	%	0.99	%	2.27	%	N/A		N/A		N/A
2024 and beyond	1.19	%	0.99	%	2.27	%	N/A		N/A		N/A

Net periodic benefit cost for the years ended December 31:
Discount rate	2.75	%	3.40	%	4.25	%	2.65	%	3.20	%	4.15	%
Expected return on plan assets(1)	5.60	%	6.25	%	6.50	%	4.00	%	6.00	%	6.25	%
Rate of compensation increase	2.75	%	2.75	%	2.75	%	N/A		N/A		N/A
Interest crediting rates for cash balance plan	1.19	%	2.27	%	3.40	%	N/A		N/A		N/A

(1)Amounts reflected are pretax values. Assumed after-tax returns for a taxable, non-union other postretirement plan were 2.39% for 2021, 4.62% for 2020 and 4.62% for 2019.

In establishing its assumption as to the expected return on plan assets, MidAmerican Energy utilizes the asset allocation and return assumptions for each asset class based on historical performance and forward-looking views of the financial markets.


	2021		2020
Assumed healthcare cost trend rates as of December 31:
Healthcare cost trend rate assumed for next year	5.90	%	6.20	%
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	2025		2025

Net periodic benefit costs assigned to MidAmerican Energy affiliates are reimbursed currently in accordance with its intercompany administrative services agreement. The expected benefit payments to participants in MidAmerican Energy's pension and other postretirement benefit plans for 2022 through 2026 and for the five years thereafter are summarized below (in millions):


	Projected Benefit Payments
	Pension		Other Postretirement

2022	$	56	$	21
2023	55		22
2024	54		22
2025	52		22
2026	51		22
2027-2031	229		98

Allocation of Plan Assets

The target allocations (percentage of plan assets) for MidAmerican Energy's pension and other postretirement benefit plan assets are as follows as of December 31, 2021:


	Pension	Other Postretirement
	%	%
Debt securities(1)	60-80	25-35
Equity securities(1)	20-40	65-75

Other	0-15	0-5

(1)For purposes of target allocation percentages and consistent with the plans' investment policy, investment funds are allocated based on the underlying investments in debt and equity securities.

Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table presents the fair value of plan assets, by major category, for MidAmerican Energy's defined benefit pension plan (in millions):


	Input Levels for Fair Value Measurements(1)
	Level 1		Level 2		Level 3		Total
As of December 31, 2021:
Cash equivalents	$	—	$	27	$	—	$	27
Debt securities:
United States government obligations	33		—		—		33
International government obligations	—		—		—		—
Corporate obligations	—		242		—		242
Municipal obligations	—		18		—		18
Agency, asset and mortgage-backed obligations	—		17		—		17
Equity securities:
United States companies	35		—		—		35




Total assets in the hierarchy	$	68	$	304	$	—	372
Investment funds(2) measured at net asset value							332


Total assets measured at fair value							$	704

As of December 31, 2020:
Cash equivalents	$	—	$	26	$	—	$	26
Debt securities:
United States government obligations	14		—		—		14
International government obligations	—		—		—		—
Corporate obligations	—		160		—		160
Municipal obligations	—		17		—		17
Agency, asset and mortgage-backed obligations	—		—		—		—
Equity securities:
United States companies	65		—		—		65




Total assets in the hierarchy	$	79	$	203	$	—	282
Investment funds(2) measured at net asset value							393

Real estate funds measured at net asset value							43
Total assets measured at fair value							$	718

(1)Refer to Note 12 for additional discussion regarding the three levels of the fair value hierarchy.

(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 56% and 44%, respectively, for 2021 and 65% and 35%, respectively, for 2020. Additionally, these funds are invested in United States and international securities of approximately 90% and 10%, respectively, for 2021 and 82% and 18%, respectively, for 2020.

The following table presents the fair value of plan assets, by major category, for MidAmerican Energy's defined benefit other postretirement plans (in millions):


	Input Levels for Fair Value Measurements(1)
	Level 1		Level 2		Level 3		Total
As of December 31, 2021:
Cash equivalents	$	8	$	—	$	—	$	8
Debt securities:
United States government obligations	3		—		—		3

Corporate obligations	—		6		—		6
Municipal obligations	—		28		—		28
Agency, asset and mortgage-backed obligations	—		3		—		3
Equity securities:


Investment funds(2)	260		—		—		260


Total assets measured at fair value	$	271	$	37	$	—	$	308

As of December 31, 2020:
Cash equivalents	$	11	$	—	$	—	$	11
Debt securities:
United States government obligations	3		—		—		3
Corporate obligations	—		7		—		7
Municipal obligations	—		65		—		65
Agency, asset and mortgage-backed obligations	—		3		—		3
Equity securities:

Investment funds(2)	189		—		—		189
Total assets measured at fair value	$	203	$	75	$	—	$	278

(1)Refer to Note 12 for additional discussion regarding the three levels of the fair value hierarchy.

(2)Investment funds are comprised of mutual funds and collective trust funds. These funds consist of equity and debt securities of approximately 82% and 18%, respectively, for 2021 and 56% and 44%, respectively, for 2020. Additionally, these funds are invested in United States and international securities of approximately 82% and 18%, respectively, for 2021 and 56% and 44%, respectively, for 2020.

The following table presents MidAmerican Energy's financial assets and liabilities recognized on the Balance Sheets and measured at fair value on a recurring basis (in millions):


	Input Levels for Fair Value Measurements
	Level 1		Level 2		Level 3		Other(1)		Total
As of December 31, 2021:
Assets:
Commodity derivatives	$	—	$	32	$	3	$	(7)	$	28


Money market mutual funds	228		—		—		—		228
Debt securities:
United States government obligations	232		—		—		—		232
International government obligations	—		2		—		—		2
Corporate obligations	—		90		—		—		90
Municipal obligations	—		3		—		—		3
Agency, asset and mortgage-backed obligations	—		2		—		—		2

Equity securities:
United States companies	428		—		—		—		428
International companies	10		—		—		—		10
Investment funds	18		—		—		—		18
	$	916	$	129	$	3	$	(7)	$	1,041

Liabilities - commodity derivatives	$	—	$	(6)	$	(8)	$	12	$	(2)



As of December 31, 2020
Assets:
Commodity derivatives	$	—	$	4	$	5	$	(5)	$	4


Money market mutual funds	41		—		—		—		41
Debt securities:
United States government obligations	200		—		—		—		200
International government obligations	—		5		—		—		5
Corporate obligations	—		73		—		—		73
Municipal obligations	—		2		—		—		2
Agency, asset and mortgage-backed obligations	—		6		—		—		6

Equity securities:
United States companies	381		—		—		—		381
International companies	9		—		—		—		9
Investment funds	17		—		—		—		17
	$	648	$	90	$	5	$	(5)	$	738

Liabilities - commodity derivatives	$	—	$	(4)	$	(3)	$	5	$	(2)

(1)Represents netting under master netting arrangements and a net cash collateral receivable of $5 million and $— million as of December 31, 2021 and 2020, respectively.

MidAmerican Funding, LLC

Pension and postretirement costs allocated by MidAmerican Funding to its parent and other affiliates in each of the years ended December 31, were as follows (in millions):


	2021		2020		2019

Pension costs	$	21	$	7	$	4
Other postretirement costs	2		(3)		(2)

NPC

Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table presents Nevada Power's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions):


	Input Levels for Fair Value Measurements
	Level 1		Level 2		Level 3		Total
As of December 31, 2021:
Assets:
Commodity derivatives	$	—	$	—	$	4	$	4
Money market mutual funds	34		—		—		34
Investment funds	3		—		—		3
	$	37	$	—	$	4	$	41

Liabilities - commodity derivatives	$	—	$	—	$	(117)	$	(117)

As of December 31, 2020:
Assets:
Commodity derivatives	$	—	$	—	$	26	$	26
Money market mutual funds	21		—		—		21
Investment funds	2		—		—		2
	$	23	$	—	$	26	$	49

Liabilities - commodity derivatives	$	—	$	—	$	(11)	$	(11)

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following as of December 31 (in millions):


	2021		2020
Qualified Pension Plan -
Other non-current assets	$	42	$	8


Non-Qualified Pension Plans:
Other current liabilities	(1)		(1)
Other long-term liabilities	(8)		(9)

Other Postretirement Plans -
Other non-current assets	8		4

SPPC

Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table presents Sierra Pacific's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions):


	Input Levels for Fair Value Measurements
	Level 1		Level 2		Level 3		Total
As of December 31, 2021:
Assets:
Commodity derivatives	$	—	$	—	$	2	$	2
Money market mutual funds	10		—		—		10
Investment funds	1		—		—		1
	$	11	$	—	$	2	$	13

Liabilities - commodity derivatives	$	—	$	—	$	(35)	$	(35)

As of December 31, 2020:
Assets:
Commodity derivatives	$	—	$	—	$	9	$	9
Money market mutual funds	17		—		—		17
	$	17	$	—	$	9	$	26

Liabilities - commodity derivatives	$	—	$	—	$	(2)	$	(2)

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following as of December 31 (in millions):


	2021		2020
Qualified Pension Plan -
Other non-current assets	$	62	$	26


Non-Qualified Pension Plans:
Other current liabilities	(1)		(1)
Other long-term liabilities	(7)		(8)

Other Postretirement Plans -
Other long-term liabilities	(10)		(13)

EEGH

Net periodic benefit credit for the plans included the following components for the years ended December 31 (in millions):


	Pension				Other Postretirement
	2020		2019		2020		2019

Service cost	$	5	$	6	$	1	$	1
Interest cost	8		11		4		5
Expected return on plan assets	(47)		(54)		(16)		(16)
Settlement	—		1		—		1
Net amortization	5		7		(3)		(2)
Net periodic benefit credit	$	(29)	$	(29)	$	(14)	$	(11)