Page 57 - SWGas Annual Report 2015

Approximately $2.1 million of realized losses (net of tax) related to the FSIRS, included in AOCI at December 31,
2015, will be reclassified into interest expense within the next twelve months as the related interest payments on
long-term debt occur.

The following table represents a rollforward of AOCI, presented on the Company’s Consolidated Balance Sheets
and its Consolidated Statements of Equity:

AOCI – Rollforward
(Thousands of dollars)

Defined Benefit Plans (Note 10) FSIRS (Note 13) Foreign Currency Items

Tax Tax Tax
Before- (Expense) After-
Before- (Expense) After- Before- (Expense) After-
Tax Benefit Tax
Tax Benefit Tax Tax Benefit Tax AOCI

Beginning Balance AOCI $ (57,211) $ 21,740 $(35,471) $(22,688) $ 8,621 $(14,067) $ (637) $ — $ (637) $(50,175)
December 31, 2014

Net actuarial gain/(loss) (30,519) 11,597 (18,922) — — — —— — (18,922)
Translation adjustments — — — ——
— (1,954) — (1,954) (1,954)

Other comprehensive income

before reclassifications (30,519) 11,597 (18,922) — — — (1,954) — (1,954) (20,876)

FSIRS amounts reclassified

from AOCI (1) — — — 3,344 (1,271) 2,073 —— — 2,073

Amortization of prior service

cost (2) 1,335 (507) 828 — — — —— — 828

Amortization of net actuarial

loss (2) 34,381 (13,065) 21,316 —— — —— — 21,316

Regulatory adjustment (3) (5,646) 2,146 (3,500) — — — —— — (3,500)

Net current period other com- (449) 171 (278) 3,344 (1,271) 2,073 (1,954) — (1,954) (159)
prehensive income (loss)
— — — —— — (66) — (66) (66)
Less: Translation adjustment
attributable to redeemable
noncontrolling interest

Net current period other com- (449) 171 (278) 3,344 (1,271) 2,073 (1,888) — (1,888) (93)
prehensive income (loss)
attributable to Southwest Gas
Corporation

Ending Balance AOCI $ (57,660) $ 21,911 $(35,749) $(19,344) $ 7,350 $(11,994) $(2,525) $ — $(2,525) $(50,268)
December 31, 2015

(1) The FSIRS reclassification amounts are included in the Net interest deductions line item on the Consolidated Statements of
Income.

(2) These AOCI components are included in the computation of net periodic benefit cost (see Note 10 – Pension and Other
Postretirement Benefits for additional details).

(3) The regulatory adjustment represents the portion of the activity above that is expected to be recovered through rates in the
future (the related regulatory asset is included in the Deferred charges and other assets line item on the Consolidated
Balance Sheets).

Southwest Gas Corporation