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Pension and Other Postretirement Benefits
12 Months Ended
Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]  
Pension and Other Postretirement Benefits
Pension and Other Postretirement Benefits
PNMR and its subsidiaries maintain qualified defined benefit pension plans, postretirement benefit plans providing medical and dental benefits, and executive retirement programs (“PNM Plans” and “TNMP Plans”). PNMR maintains the legal obligation for the benefits owed to participants under these plans. The periodic costs or income of the PNM Plans and TNMP Plans are included in regulated rates to the extent attributable to regulated operations. PNM receives a regulated return on the amount it has funded for its pension plan in excess of the periodic cost or income to the extent included in retail rates.
Participants in the PNM Plans include eligible employees and retirees of PNMR and other subsidiaries of PNMR. Participants in the TNMP Plans include eligible employees and retirees of TNMP. The PNM pension plan was frozen at the end of 1997 with regard to new participants, salary levels, and benefits. Through December 31, 2007, additional credited service could be accrued under the PNM pension plan up to a limit determined by age and service. The TNMP pension plan was frozen at December 31, 2005 with regard to new participants, salary levels, and benefits.
GAAP requires a plan sponsor to (a) recognize in its statement of financial position an asset for a plan’s overfunded status or a liability for a plan’s underfunded status; (b) measure a plan’s assets and its obligations that determine its funded status as of the end of the employer’s fiscal year; and (c) recognize changes in the funded status of a defined benefit postretirement plan in the year in which the changes occur.
GAAP requires unrecognized prior service costs and unrecognized gains or losses to be recorded in AOCI and subsequently amortized. The amortization of these incurred costs will ultimately be included as pension and postretirement benefit periodic cost or income in subsequent years. To the extent the amortization of these items will ultimately be recovered in future rates, PNM and TNMP record the costs as a regulatory asset or regulatory liability.
For the PNM Plans and TNMP Plans, the Company has in place a policy that defines the investment objectives, establishes performance goals of the asset managers, and provides procedures for the manner in which investments are to be reviewed. The plans implement investment strategies to achieve the following objectives:
 
Maximize the return on assets, commensurate with the risk that the Corporate Investment Committee deems appropriate to meet the obligations of the pension plans and OPEB plans, minimize the volatility of expense, and account for contingencies
Transition asset mix over time to a higher proportion of high quality fixed income investments as the plans’ funded statuses improve
Management is responsible for the determination of the asset target mix and the expected rate of return. The target asset allocations are determined based on consultations with external investment advisors. The expected long-term rate of return on pension and postretirement plan assets is calculated on the market-related value of assets. GAAP requires that actual gains and losses on pension and postretirement plan assets be recognized in the market-related value of assets equally over a period of not more than five years, which reduces year-to-year volatility. For the PNM Plans and TNMP Plans, the market-related value of assets is equal to the prior year’s market related value of assets adjusted for contributions, benefit payments and investment gains and losses that are within a corridor of plus or minus 4.0% around the expected return on market value. Gains and losses that are outside the corridor are amortized over five years.

Pension Plans
For defined benefit pension plans, including the executive retirement plans, the PBO represents the actuarial present value of all benefits attributed by the pension benefit formula to employee service rendered prior to that date using assumptions regarding future compensation levels. The ABO represents the PBO without considering future compensation levels. Since the plans are frozen, the PBO and ABO are equal. The following table presents information about the PBO, fair value of plan assets, and funded status of the plans:
 
PNM Plan
 
TNMP Plan
 
Year Ended December 31,
 
Year Ended December 31,
 
2013
 
2012
 
2013
 
2012
 
(In thousands)
PBO at beginning of year
$
675,549

 
$
588,874

 
$
76,640

 
$
67,234

Service cost

 

 

 

Interest cost
28,142

 
32,232

 
3,087

 
3,635

Plan amendment
(6,346
)
 

 

 

Actuarial (gain) loss
(56,533
)
 
94,361

 
(7,820
)
 
11,434

Benefits paid
(41,275
)
 
(39,918
)
 
(5,748
)
 
(5,663
)
PBO at end of year
599,537

 
675,549

 
66,159

 
76,640

Fair value of plan assets at beginning of year
518,095

 
427,386

 
66,540

 
59,952

Actual return on plan assets
19,533

 
52,927

 
4,326

 
6,951

Employer contributions
60,000

 
77,700

 
1,000

 
5,300

Benefits paid
(41,275
)
 
(39,918
)
 
(5,748
)
 
(5,663
)
Fair value of plan assets at end of year
556,353

 
518,095

 
66,118

 
66,540

Funded status – asset (liability) for pension benefits
$
(43,184
)
 
$
(157,454
)
 
$
(41
)
 
$
(10,100
)


Effective January 1, 2014, the PNM Pension Plan was amended to allow for all participants, terminating after the effective date, to elect a lump sum payment of benefits. This change is reflected in the above table as of December 31, 2013.

The following table presents pre-tax information about prior service cost and net actuarial (gain) loss in AOCI as of December 31, 2013.
 
PNM Plan
 
TNMP Plan
 
December 31, 2013
 
December 31, 2013
 
Prior service
cost
 
Net actuarial
(gain) loss
 
Net actuarial
(gain) loss
 
(In thousands)
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year
$
32

 
$
159,826

 
$

Experience loss (gain)

 
(34,136
)
 
(7,297
)
Regulatory asset (liability) adjustment

 
19,799

 
7,297

Plan amendment
(2,665
)
 

 

Amortization recognized in net periodic benefit cost (income)
(32
)
 
(6,233
)
 

Amounts in AOCI not yet recognized in net periodic benefit cost (income) at end of year
$
(2,665
)
 
$
139,256

 
$

Amortization expected to be recognized in 2014
$
(405
)
 
$
5,469

 
$


The following table presents the components of net periodic benefit cost (income):
 
Year Ended December 31,
 
2013
 
2012
 
2011
 
(In thousands)
PNM Plan
 
 
 
 
 
Service cost
$

 
$

 
$

Interest cost
28,142

 
32,232

 
32,804

Expected return on plan assets
(41,930
)
 
(41,301
)
 
(37,075
)
Amortization of net (gain) loss
14,840

 
10,516

 
9,209

Amortization of prior service cost
76

 
317

 
317

Net periodic benefit cost
$
1,128

 
$
1,764

 
$
5,255

TNMP Plan
 
 
 
 
 
Service cost
$

 
$

 
$

Interest cost
3,087

 
3,635

 
3,800

Expected return on plan assets
(4,849
)
 
(5,324
)
 
(5,470
)
Amortization of net (gain) loss
1,049

 
462

 
346

Amortization of prior service cost

 

 

Net periodic benefit cost (income)
$
(713
)
 
$
(1,227
)
 
$
(1,324
)


The following significant weighted-average assumptions were used to determine the PBO and net periodic benefit cost (income). Should actual experience differ from actuarial assumptions, the PBO and net periodic benefit cost (income) would be affected.
 
Year Ended December 31,
PNM Plan
2013
 
2012
 
2011
Discount rate for determining December 31 PBO
5.27
%
 
4.30
%
 
5.67
%
Discount rate for determining net periodic benefit cost (income)
4.30
%
 
5.67
%
 
5.72
%
Expected return on plan assets
7.65
%
 
8.25
%
 
8.50
%
Rate of compensation increase
N/A

 
N/A

 
N/A

TNMP Plan
 
 
 
 

Discount rate for determining December 31 PBO
5.06
%
 
4.19
%
 
5.69
%
Discount rate for determining net periodic benefit cost (income)
4.19
%
 
5.69
%
 
5.50
%
Expected return on plan assets
7.65
%
 
8.25
%
 
8.50
%
Rate of compensation increase
N/A

 
N/A

 
N/A


The assumed discount rate for determining the PBO was determined based on a review of long-term high-grade bonds and management’s expectations. Changes in discount rates resulted in a decrease in the PNM PBO of $60.9 million at December 31, 2013 and an increase of $86.4 million at December 31, 2012. Changes in discount rates resulted in a decrease in the TNMP PBO of $6.4 million at December 31, 2013 and an increase of $10.7 million at December 31, 2012. Changes in demographic experiences also resulted in actuarial losses in the PNM PBO of $4.4 million and $8.0 million at December 31, 2013 and 2012. Changes in demographic experiences resulted in an actuarial gain in the TNMP PBO of $1.4 million at December 31, 2013 and an actuarial loss of $0.8 million at December 31, 2012. The impacts of other changes in assumptions and experience were not significant. These changes are reflected as actuarial (gain) loss above. In 2011, TNMP had an actuarial loss due to changes in demographics associated with the early retirement of First Choice employees. The loss was not significant and is not included in the net periodic benefit (income) cost above.
The expected long-term rate of return on plan assets reflects the average rate of earnings expected on the funds invested, or to be invested, to provide for the benefits included in the PBO. Factors that are considered include, but are not limited to, historic returns on plan assets, current market information on long-term returns (e.g., long-term bond rates) and current and target asset allocations between asset categories. The expected long-term rate of return assumption for the PNM and TNMP pension plans compares to the actual return of 3.5% and 6.7% for the year ended December 31, 2013. If all other factors were to remain unchanged, a 1% decrease in the expected long-term rate of return would cause PNM’s and TNMP’s 2014 net periodic cost to increase $5.3 million and $0.7 million (analogous changes would result from a 1% increase).

The Company’s long-term pension investment strategy is to invest in assets whose interest rate sensitivity is correlated with the pension liability. The Company has chosen to implement this strategy known as Liability Driven Investing (“LDI”) by increasing the liability matching investments as the funded status of the pension plans improves. These liability matching investments are currently fixed income securities. The pension plans current targeted asset allocation is 21% equities, 65% fixed income, and 14% alternative investments. Equity investments are primarily in domestic securities that include large, mid, and small capitalization companies. The pension plans have a 6% targeted allocation to equities of companies domiciled primarily in developed countries outside of the United States. This category includes actively managed international and domestic equity securities that are benchmarked against a variety of style indices. Fixed income investments are primarily corporate bonds of companies from diversified industries, and government securities. Alternative investments include investments in hedge funds, real estate funds, and private equity funds. The hedge funds and private equity funds are structured as multi-manager multi-strategy fund of funds to achieve a diversified position in these asset classes. The hedge funds pursue various absolute return strategies such as relative value, long-short equity, and event driven. Private equity fund strategies include mezzanine financing, buy-outs, and venture capital. The real estate investment is structured as an open-ended, commingled private real estate portfolio that invests in a diversified portfolio of assets including commercial property and multi-family housing. See Note 8 for fair value information concerning assets held by the pension plans.

The following pension benefit payments are expected to be paid:
 
PNM
Plan
 
TNMP
Plan
 
(In thousands)
2014
$
54,356

 
$
6,111

2015
52,532

 
6,181

2016
52,204

 
5,831

2017
50,954

 
5,631

2018
49,325

 
5,696

2019 – 2023
222,241

 
23,804


Due to declines in the general price levels of marketable equity securities held by the pension plans, PNM and TNMP have been making contributions to the pension plans since 2010. The Company does not anticipate making any contributions to the pension plans in 2014 due to the current funded status of the PNM and TNMP pension plans. Based on current law, including recent amendments to funding requirements, and estimates of portfolio performance, contributions to the pension plan trust for 2015-2018 are estimated to total $61.5 million for PNM and none for TNMP. These anticipated contributions were developed using current funding assumptions with discount rates of 5.2% to 5.5%. Actual amounts to be funded in the future will be dependent on the actuarial assumptions at that time, including the appropriate discount rate.
Other Postretirement Benefit Plans
For postretirement benefit plans, the APBO is the actuarial present value of all future benefits attributed under the terms of the postretirement benefit plan to employee service rendered to date.
The following table presents information about the APBO, the fair value of plan assets, and the funded status of the plans:
 
PNM Plan
 
TNMP Plan
 
Year Ended December 31,
 
Year Ended December 31,
 
2013
 
2012
 
2013
 
2012
 
(In thousands)
APBO at beginning of year
$
99,613

 
$
96,221

 
$
13,678

 
$
11,344

Service cost
260

 
217

 
299

 
244

Interest cost
4,113

 
5,293

 
566

 
624

Participant contributions
2,537

 
2,266

 
373

 
404

Actuarial (gain) loss
(4,566
)
 
5,008

 
(1,080
)
 
2,727

Benefits paid
(9,792
)
 
(9,392
)
 
(1,570
)
 
(1,665
)
APBO at end of year
92,165

 
99,613

 
12,266

 
13,678

Fair value of plan assets at beginning of year
64,464

 
58,776

 
8,643

 
8,303

Actual return on plan assets
12,780

 
9,285

 
1,813

 
1,259

Employer contributions
3,576

 
3,529

 
342

 
342

Participant contributions
2,537

 
2,266

 
373

 
404

Benefits paid
(9,792
)
 
(9,392
)
 
(1,570
)
 
(1,665
)
Fair value of plan assets at end of year
73,565

 
64,464

 
9,601

 
8,643

Funded status – asset (liability)
$
(18,600
)
 
$
(35,149
)
 
$
(2,665
)
 
$
(5,035
)

 
In the year ended December 31, 2013, actuarial gains of $12.3 million and $2.4 million were recorded as regulatory assets for the PNM Plan and TNMP Plan. There were no prior service costs recorded for the year ended December 31, 2013.

The following table presents the components of net periodic benefit cost:
 
Year Ended December 31,
 
2013
 
2012
 
2011
 
(In thousands)
PNM Plan
 
 
 
 
 
Service cost
$
260

 
$
217

 
$
259

Interest cost
4,113

 
5,293

 
5,378

Expected return on plan assets
(5,043
)
 
(4,901
)
 
(5,388
)
Amortization of net (gain) loss
4,242

 
3,888

 
3,205

Amortization of prior service credit
(1,343
)
 
(1,343
)
 
(2,648
)
Net periodic benefit cost
$
2,229

 
$
3,154

 
$
806

TNMP Plan
 
 
 
 
 
Service cost
$
299

 
$
244

 
$
306

Interest cost
566

 
624

 
654

Expected return on plan assets
(503
)
 
(516
)
 
(533
)
Amortization of net (gain) loss

 
(209
)
 
(193
)
Amortization of prior service cost
57

 
57

 
60

Net periodic benefit cost
$
419

 
$
200

 
$
294



The following significant weighted-average assumptions were used to determine the APBO and net periodic benefit cost. Should actual experience differ from actuarial assumptions, the APBO and net periodic benefit cost would be affected.
 
Year Ended December 31,
PNM Plan
2013
 
2012
 
2011
Discount rate for determining December 31 APBO
5.21
%
 
4.26
%
 
5.70
%
Discount rate for determining net periodic benefit cost
4.26
%
 
5.70
%
 
5.59
%
Expected return on plan assets
8.50
%
 
8.50
%
 
8.50
%
Rate of compensation increase
N/A

 
N/A

 
N/A

TNMP Plan
 
 
 
 
 
Discount rate for determining December 31 APBO
5.21
%
 
4.26
%
 
5.70
%
Discount rate for determining net periodic benefit cost
4.26
%
 
5.70
%
 
5.59
%
Expected return on plan assets
6.50
%
 
6.50
%
 
6.30
%
Rate of compensation increase
N/A

 
N/A

 
N/A


The assumed discount rate for determining the APBO was determined based on a review of long-term high-grade bonds and management’s expectations. Changes in the discount rates resulted in a decrease in the PNM APBO of $8.8 million at December 31, 2013 and an increase of $13.1 million at December 31, 2012. Changes in discount rates resulted in a decrease in the TNMP APBO of $1.3 million at December 31, 2013 and an increase of $2.0 million at December 31, 2012. Changes in claims, contributions, medical trends and demographic experience also resulted in actuarial losses in the PNM plan of $4.2 million at December 31, 2013 and actuarial gains of $8.1 million at December 31, 2012. Changes in claims, contributions, and demographic experience resulted in an actuarial losses in the TNMP plan of $0.2 million at December 31, 2013 and $0.8 million at December 31, 2012. The impacts of other changes in assumptions and experience were not significant. These changes are reflected as actuarial (gain) loss above.
The expected long-term rate of return on plan assets reflects the average rate of earnings expected on the funds invested, or to be invested, to provide for the benefits included in the APBO. Factors that are considered include, but are not limited to, historic returns on plan assets, current market information on long-term returns (e.g., long-term bond rates), and current and target asset allocations between asset categories. The expected long-term rate of return assumption for the PNM and TNMP postretirement benefit plans compares to the actual return of 20.4% and 22.1% for the year ended December 31, 2013. If all other factors were to remain unchanged, a 1% decrease in the expected long-term rate of return would cause PNM’s and TNMP’s 2014 postretirement benefit cost to increase $0.7 million and $0.1 million (analogous changes would result from a 1% increase).
TNMP’s exposure to cost increases in the postretirement benefit plan is minimized by a provision that limits TNMP’s share of costs under the plan. Costs of the plan in excess of the limit are wholly borne by the participants. TNMP reached the cost limit at the end of 2001. As a result, a one-percentage-point change in assumed health care cost trend rates would have no effect on either the net periodic expense or the year-end APBO.
The following table shows the assumed health care cost trend rates: 
 
PNM Plan
 
December 31,
 
2013
 
2012
Health care cost trend rate assumed for next year
7.5
%
 
7.0
%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)
5.0
%
 
5.0
%
Year that the rate reaches the ultimate trend rate
2019

 
2017

 
The following table shows the impact of a one-percentage-point change in assumed health care cost trend rates:
 
PNM Plan
 
1-Percentage-
Point  Increase
 
1-Percentage-
Point  Decrease
 
(In thousands)
Effect on total of service and interest cost
$
322

 
$
(274
)
Effect on APBO
$
5,859

 
$
(4,826
)

The Company’s other postretirement benefit plans invest in a portfolio that is diversified by asset class and style strategies. The other postretirement benefit plans generally use the same pension fixed income and equity investment managers and utilize the same overall investment strategy as described above for the pension plans, except there is no allocation to alternative investments. The other postretirement benefit plans have a target asset allocation of 70% equities and 30% fixed income. See Note 8 for fair value information concerning assets held by the other postretirement benefit plans.
The following other postretirement benefit payments, which reflect expected future service, are expected to be paid:
 
PNM
Plan
 
TNMP
Plan
 
(In thousands)
2014
$
6,586

 
$
787

2015
6,720

 
795

2016
6,943

 
815

2017
7,080

 
833

2018
7,306

 
852

2019 - 2023
36,569

 
4,558


PNM expects to make contributions to the PNM postretirement benefit plan totaling $3.5 million in 2014 and $14.0 million for 2015-2018. TNMP expects to make contributions to the TNMP postretirement benefit plan totaling $0.3 million in 2014 and $1.4 million for 2015-2018 .
Executive Retirement Programs
For the executive retirement programs, the following table presents information about the PBO and funded status of the plans:
 
PNM Plan
 
TNMP Plan
 
Year Ended
December 31,
 
Year Ended
December 31,
 
2013
 
2012
 
2013
 
2012
 
(In thousands)
PBO at beginning of year
$
17,467

 
$
16,191

 
$
902

 
$
844

Service cost

 

 

 

Interest cost
720

 
876

 
36

 
45

Actuarial (gain) loss
(330
)
 
1,895

 
(21
)
 
107

Benefits paid
(1,494
)
 
(1,495
)
 
(94
)
 
(94
)
PBO at end of year – funded status
16,363

 
17,467

 
823

 
902

Less current liability
1,536

 
1,452

 
94

 
90

Non-current liability
$
14,827

 
$
16,015

 
$
729

 
$
812


 
The following table presents pre-tax information about net actuarial loss in AOCI as of December 31, 2013.
 
December 31, 2013
 
PNM Plan
 
TNMP Plan
 
(In thousands)
Amount in AOCI not yet recognized in net periodic benefit cost at beginning of year
$
2,069

 
$

Experience loss (gain)
(330
)
 
(22
)
Regulatory asset (liability) adjustment
192

 
22

Amortization recognized in net periodic benefit cost (income)
(98
)
 

Amount in AOCI not yet recognized in net periodic benefit cost at end of year
$
1,833

 
$

Amortization expected to be recognized in 2014
$
88

 
$


The following table presents the components of net periodic benefit:
 
Year Ended December 31,
 
2013
 
2012
 
2011
 
(In thousands)
PNM Plan
 
 
 
 
 
Service cost
$

 
$

 
$

Interest cost
720

 
876

 
930

Amortization of net (gain) loss
232

 
83

 
93

Amortization of prior service cost

 

 

Net periodic benefit cost
$
952

 
$
959

 
$
1,023

TNMP Plan
 
 
 
 
 
Service cost
$

 
$

 
$

Interest cost
36

 
45

 
46

Amortization of net (gain) loss

 

 

Amortization of prior service cost

 

 

Net periodic benefit cost
$
36

 
$
45

 
$
46


The following significant weighted-average assumptions were used to determine the PBO and net periodic benefit cost. Should actual experience differ from actuarial assumptions, the PBO and net periodic benefit cost would be affected.
 
Year Ended December 31,
PNM Plan
2013
 
2012
 
2011
Discount rate for determining December 31 PBO
5.27
%
 
4.30
%
 
5.67
%
Discount rate for determining net periodic benefit cost
4.30
%
 
5.67
%
 
5.72
%
Long-term rate of return on plan assets
N/A

 
N/A

 
N/A

Rate of compensation increase
N/A

 
N/A

 
N/A

TNMP Plan
 
 
 
 
 
Discount rate for determining December 31 PBO
5.06
%
 
4.19
%
 
5.69
%
Discount rate for determining net periodic benefit cost
4.19
%
 
5.69
%
 
5.50
%
Long-term rate of return on plan assets
N/A

 
N/A

 
N/A

Rate of compensation increase
N/A

 
N/A

 
N/A


 
The assumed discount rate for determining the PBO was determined based on a review of long-term high-grade bonds and management’s expectations. The impacts of changes in assumptions or experience were not significant.
The following executive retirement plan payments, which reflect expected future service, are expected:
 
PNM
Plan
 
TNMP
Plan
 
(In thousands)
2014
$
1,535

 
$
93

2015
1,516

 
92

2016
1,494

 
90

2017
1,468

 
88

2018
1,438

 
85

2019 – 2023
6,580

 
365


Other Retirement Plans
PNMR sponsors a 401(k) defined contribution plan for eligible employees, including those of its subsidiaries. PNMR’s contributions to the 401(k) plan consist of a discretionary matching contribution equal to 75% of the first 6% of eligible compensation contributed by the employee on a before-tax basis. PNMR also makes a non-matching contribution ranging from 3% to 10% of eligible compensation based on the eligible employee’s age.
PNMR also provides executive deferred compensation benefits through an unfunded, non-qualified plan. The purpose of this plan is to permit certain key employees of PNMR who participate in the 401(k) defined contribution plan to defer compensation and receive credits without reference to the certain limitations on contributions. Eligible employees are allowed to save on an after-tax basis. This plan has been amended and the after-tax provision will be eliminated on June 30, 2015.
A summary of expenses for these other retirement plans is as follows:
 
Year Ended December 31,
 
2013
 
2012
 
2011
 
(In thousands)
PNMR
 
 
 
 
 
401(k) plan
$
16,785

 
$
16,185

 
$
17,000

Non-qualified plan
$
2,204

 
$
1,491

 
$
1,931

PNM
 
 
 
 
 
401(k) plan
$
12,952

 
$
12,427

 
$
12,541

Non-qualified plan
$
1,691

 
$
1,143

 
$
1,407

TNMP
 
 
 
 
 
401(k) plan
$
3,953

 
$
3,739

 
$
3,723

Non-qualified plan
$
513

 
$
327

 
$
431