XML 49 R34.htm IDEA: XBRL DOCUMENT v3.5.0.2
Retirement benefits (Tables)
 6 Months Ended
Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of components of net periodic benefit cost for consolidated HEI
The components of net periodic benefit cost for HEI consolidated and Hawaiian Electric consolidated were as follows:
 
 
Three months ended June 30
 
Six months ended June 30
 
 
Pension benefits
 
Other benefits
 
Pension benefits
 
Other benefits
(in thousands)
 
2016
 
2015
 
2016
 
2015
 
2016
 
2015
 
2016
 
2015
HEI consolidated
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Service cost
 
$
14,913

 
$
16,640

 
$
832

 
$
1,094

 
$
30,304

 
$
33,106

 
$
1,668

 
$
1,963

Interest cost
 
20,481

 
19,363

 
2,363

 
2,268

 
40,758

 
38,502

 
4,837

 
4,503

Expected return on plan assets
 
(24,616
)
 
(22,149
)
 
(3,091
)
 
(2,934
)
 
(49,280
)
 
(44,300
)
 
(6,143
)
 
(5,841
)
Amortization of net prior service loss (gain)
 
(14
)
 
1

 
(448
)
 
(449
)
 
(28
)
 
2

 
(896
)
 
(897
)
Amortization of net actuarial loss
 
6,408

 
9,455

 
116

 
466

 
12,377

 
18,417

 
403

 
896

Net periodic benefit cost
 
17,172

 
23,310

 
(228
)
 
445

 
34,131

 
45,727

 
(131
)
 
624

Impact of PUC D&Os
 
(4,765
)
 
(10,464
)
 
483

 
(218
)
 
(8,811
)
 
(19,977
)
 
672

 
(120
)
Net periodic benefit cost (adjusted for impact of PUC D&Os)
 
$
12,407

 
$
12,846

 
$
255

 
$
227

 
$
25,320

 
$
25,750

 
$
541

 
$
504

Hawaiian Electric consolidated
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Service cost
 
$
14,465

 
$
16,148

 
$
820

 
$
1,080

 
$
29,398

 
$
32,131

 
$
1,642

 
$
1,935

Interest cost
 
18,801

 
17,749

 
2,280

 
2,191

 
37,404

 
35,265

 
4,669

 
4,350

Expected return on plan assets
 
(22,885
)
 
(20,639
)
 
(3,046
)
 
(2,889
)
 
(45,817
)
 
(41,271
)
 
(6,049
)
 
(5,748
)
Amortization of net prior service loss (gain)
 
3

 
10

 
(451
)
 
(451
)
 
7

 
20

 
(902
)
 
(902
)
Amortization of net actuarial loss
 
5,885

 
8,592

 
113

 
455

 
11,346

 
16,686

 
397

 
877

Net periodic benefit cost
 
16,269

 
21,860

 
(284
)
 
386

 
32,338

 
42,831

 
(243
)
 
512

Impact of PUC D&Os
 
(4,765
)
 
(10,464
)
 
483

 
(218
)
 
(8,811
)
 
(19,977
)
 
672

 
(120
)
Net periodic benefit cost (adjusted for impact of PUC D&Os)
 
$
11,504

 
$
11,396

 
$
199

 
$
168

 
$
23,527

 
$
22,854

 
$
429

 
$
392