XML 130 R38.htm IDEA: XBRL DOCUMENT v3.20.4
Comprehensive Income (Tables)
12 Months Ended
Dec. 31, 2020
Changes in Accumulated Other Comprehensive Income (Loss) by Component
AEP
Cash Flow HedgesPension and OPEB 
For the Year Ended December 31, 2020CommodityInterest RateAmortization of Deferred CostsChanges in Funded StatusTotal
 (in millions)
Balance in AOCI as of December 31, 2019$(103.5)$(11.5)$130.7 $(163.4)$(147.7)
Change in Fair Value Recognized in AOCI(89.2)(39.9)(a)— 62.7 (66.4)
Amount of (Gain) Loss Reclassified from AOCI
Generation & Marketing Revenues (b)
(0.4)— — — (0.4)
Purchased Electricity for Resale (b)
167.6 — — — 167.6 
Interest Expense (b)
— 4.9 — — 4.9 
Amortization of Prior Service Cost (Credit)
— — (19.2)— (19.2)
Amortization of Actuarial (Gains) Losses
— — 10.3 — 10.3 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
167.2 4.9 (8.9)— 163.2 
Income Tax (Expense) Benefit
35.1 1.0 (1.9)— 34.2 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
132.1 3.9 (7.0)— 129.0 
Net Current Period Other Comprehensive Income (Loss)
42.9 (36.0)(7.0)62.7 62.6 
Balance in AOCI as of December 31, 2020$(60.6)$(47.5)$123.7 $(100.7)$(85.1)
AEP
 Cash Flow HedgesPension and OPEB 
For the Year Ended December 31, 2019CommodityInterest Rate Amortization of Deferred CostsChanges in Funded StatusTotal
 (in millions)
Balance in AOCI as of December 31, 2018$(23.0)$(12.6)$136.3 $(221.1)$(120.4)
Change in Fair Value Recognized in AOCI(127.2)(0.2)(a)— 57.7 (69.7)
Amount of (Gain) Loss Reclassified from AOCI
Generation & Marketing Revenues (b)
(0.2)— — — (0.2)
Purchased Electricity for Resale (b)
59.5 — — — 59.5 
Interest Expense (b)
— 1.5 — — 1.5 
Amortization of Prior Service Cost (Credit)
— — (19.2)— (19.2)
Amortization of Actuarial (Gains) Losses
— — 12.1 — 12.1 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
59.3 1.5 (7.1)— 53.7 
Income Tax (Expense) Benefit
12.6 0.2 (1.5)— 11.3 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
46.7 1.3 (5.6)— 42.4 
Net Current Period Other Comprehensive Income (Loss)
(80.5)1.1 (5.6)57.7 (27.3)
Balance in AOCI as of December 31, 2019$(103.5)$(11.5)$130.7 $(163.4)$(147.7)

 Cash Flow Hedges Pension and OPEB 
For the Year Ended December 31, 2018CommodityInterest Rate Securities
Available for Sale
Amortization of Deferred CostsChanges in Funded StatusTotal
 (in millions)
Balance in AOCI as of December 31, 2017$(28.4)$(13.0)$11.9 $141.6 $(179.9)$(67.8)
Change in Fair Value Recognized in AOCI37.3 2.3 — — (33.0)6.6 
Amount of (Gain) Loss Reclassified from AOCI
Generation & Marketing Revenues (b)
(0.1)— — — — (0.1)
Purchased Electricity for Resale (b)
(32.6)— — — — (32.6)
Interest Expense (b)
— 1.1 — — — 1.1 
Amortization of Prior Service Cost (Credit)
— — — (19.5)— (19.5)
Amortization of Actuarial (Gains) Losses
— — — 12.8 — 12.8 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
(32.7)1.1 — (6.7)— (38.3)
Income Tax (Expense) Benefit
(6.9)0.3 — (1.4)— (8.0)
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
(25.8)0.8 — (5.3)— (30.3)
Net Current Period Other Comprehensive Income (Loss)
11.5 3.1 — (5.3)(33.0)(23.7)
ASU 2018-02 Adoption(6.1)(2.7)— — (8.2)(17.0)
ASU 2016-01 Adoption— — (11.9)— — (11.9)
Balance in AOCI as of December 31, 2018$(23.0)$(12.6)$— $136.3 $(221.1)$(120.4)
AEP Texas
Pension and OPEB
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2020Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2019$(3.4)$4.9 $(14.3)$(12.8)
Change in Fair Value Recognized in AOCI
0.1 — 2.6 2.7 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
1.3 — — 1.3 
Amortization of Prior Service Cost (Credit)
— (0.1)— (0.1)
Amortization of Actuarial (Gains) Losses
— 0.3 — 0.3 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
1.3 0.2 — 1.5 
Income Tax (Expense) Benefit
0.3 — — 0.3 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
1.0 0.2 — 1.2 
Net Current Period Other Comprehensive Income (Loss)1.1 0.2 2.6 3.9 
Balance in AOCI as of December 31, 2020$(2.3)$5.1 $(11.7)$(8.9)

Pension and OPEB
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2019Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2018$(4.4)$4.7 $(15.4)$(15.1)
Change in Fair Value Recognized in AOCI
— — 1.1 1.1 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
1.3 — — 1.3 
Amortization of Prior Service Cost (Credit)
— (0.1)— (0.1)
Amortization of Actuarial (Gains) Losses
— 0.3 — 0.3 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
1.3 0.2 — 1.5 
Income Tax (Expense) Benefit
0.3 — — 0.3 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
1.0 0.2 — 1.2 
Net Current Period Other Comprehensive Income (Loss)1.0 0.2 1.1 2.3 
ASU 2018-02 Adoption— — — — 
Balance in AOCI as of December 31, 2019$(3.4)$4.9 $(14.3)$(12.8)

Pension and OPEB
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2018Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2017$(4.5)$4.5 $(12.6)$(12.6)
Change in Fair Value Recognized in AOCI
— — (1.0)(1.0)
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
1.3 — — 1.3 
Amortization of Prior Service Cost (Credit)
— (0.1)— (0.1)
Amortization of Actuarial (Gains) Losses
— 0.4 — 0.4 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
1.3 0.3 — 1.6 
Income Tax (Expense) Benefit
0.3 0.1 — 0.4 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
1.0 0.2 — 1.2 
Net Current Period Other Comprehensive Income (Loss)1.0 0.2 (1.0)0.2 
ASU 2018-02 Adoption(0.9)— (1.8)(2.7)
Balance in AOCI as of December 31, 2018$(4.4)$4.7 $(15.4)$(15.1)
APCo
Pension and OPEB 
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2020Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2019$0.9 $9.2 $(5.1)$5.0 
Change in Fair Value Recognized in AOCI
(0.7)— 7.7 7.0 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
(1.3)— — (1.3)
Amortization of Prior Service Cost (Credit)
— (5.3)— (5.3)
Amortization of Actuarial (Gains) Losses
— 0.5 — 0.5 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
(1.3)(4.8)— (6.1)
Income Tax (Expense) Benefit
(0.3)(1.0)— (1.3)
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
(1.0)(3.8)— (4.8)
Net Current Period Other Comprehensive Income (Loss)(1.7)(3.8)7.7 2.2 
Balance in AOCI as of December 31, 2020$(0.8)$5.4 $2.6 $7.2 

Pension and OPEB
AmortizationChanges in
Cash Flow Hedges -of DeferredFunded
For the Year Ended December 31, 2019Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2018$1.8 $11.7 $(18.5)$(5.0)
Change in Fair Value Recognized in AOCI
— — 13.4 13.4 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
(1.1)— — (1.1)
Amortization of Prior Service Cost (Credit)
— (5.3)— (5.3)
Amortization of Actuarial (Gains) Losses
— 2.1 — 2.1 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
(1.1)(3.2)— (4.3)
Income Tax (Expense) Benefit
(0.2)(0.7)— (0.9)
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
(0.9)(2.5)— (3.4)
Net Current Period Other Comprehensive Income (Loss)(0.9)(2.5)13.4 10.0 
Balance in AOCI as of December 31, 2019$0.9 $9.2 $(5.1)$5.0 

Pension and OPEB
AmortizationChanges in
Cash Flow Hedgesof DeferredFunded
For the Year Ended December 31, 2018CommodityInterest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2017$— $2.2 $14.8 $(15.7)$1.3 
Change in Fair Value Recognized in AOCI
(0.7)— — (2.6)(3.3)
Amount of (Gain) Loss Reclassified from AOCI
Purchased Electricity for Resale (b)0.9 — — — 0.9 
Interest Expense (b)
— (1.1)— — (1.1)
Amortization of Prior Service Cost (Credit)
— — (5.2)— (5.2)
Amortization of Actuarial (Gains) Losses
— — 1.3 — 1.3 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
0.9 (1.1)(3.9)— (4.1)
Income Tax (Expense) Benefit
0.2 (0.2)(0.8)— (0.8)
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
0.7 (0.9)(3.1)— (3.3)
Net Current Period Other Comprehensive Income (Loss)— (0.9)(3.1)(2.6)(6.6)
ASU 2018-02 Adoption— 0.5 — (0.2)0.3 
Balance in AOCI as of December 31, 2018$— $1.8 $11.7 $(18.5)$(5.0)
I&M
Pension and OPEB
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2020Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2019$(9.9)$4.9 $(6.6)$(11.6)
Change in Fair Value Recognized in AOCI
— — 3.1 3.1 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
2.0 — — 2.0 
Amortization of Prior Service Cost (Credit)
— (0.8)— (0.8)
Amortization of Actuarial (Gains) Losses
— 0.7 — 0.7 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
2.0 (0.1)— 1.9 
Income Tax (Expense) Benefit
0.4 — — 0.4 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
1.6 (0.1)— 1.5 
Net Current Period Other Comprehensive Income (Loss)1.6 (0.1)3.1 4.6 
Balance in AOCI as of December 31, 2020$(8.3)$4.8 $(3.5)$(7.0)

Pension and OPEB
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2019Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2018$(11.5)$5.1 $(7.4)$(13.8)
Change in Fair Value Recognized in AOCI
— — 0.8 0.8 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
2.0 — — 2.0 
Amortization of Prior Service Cost (Credit)
— (0.8)— (0.8)
Amortization of Actuarial (Gains) Losses
— 0.6 — 0.6 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
2.0 (0.2)— 1.8 
Income Tax (Expense) Benefit
0.4 — — 0.4 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
1.6 (0.2)— 1.4 
Net Current Period Other Comprehensive Income (Loss)1.6 (0.2)0.8 2.2 
Balance in AOCI as of December 31, 2019$(9.9)$4.9 $(6.6)$(11.6)

Pension and OPEB
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2018Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2017$(10.7)$5.1 $(6.5)$(12.1)
Change in Fair Value Recognized in AOCI
— — (0.6)(0.6)
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
2.0 — — 2.0 
Amortization of Prior Service Cost (Credit)
— (0.8)— (0.8)
Amortization of Actuarial (Gains) Losses
— 0.8 — 0.8 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
2.0 — — 2.0 
Income Tax (Expense) Benefit
0.4 — — 0.4 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
1.6 — — 1.6 
Net Current Period Other Comprehensive Income (Loss)1.6 — (0.6)1.0 
ASU 2018-02 Adoption(2.4)— (0.3)(2.7)
Balance in AOCI as of December 31, 2018$(11.5)$5.1 $(7.4)$(13.8)
OPCo
Cash Flow Hedge –
For the Year Ended December 31, 2020Interest Rate
(in millions)
Balance in AOCI as of December 31, 2019$— 
Change in Fair Value Recognized in AOCI
— 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
— 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
— 
Income Tax (Expense) Benefit
— 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
— 
Net Current Period Other Comprehensive Income (Loss)— 
Balance in AOCI as of December 31, 2020$— 

Cash Flow Hedge –
For the Year Ended December 31, 2019Interest Rate
(in millions)
Balance in AOCI as of December 31, 2018$1.0 
Change in Fair Value Recognized in AOCI
— 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
(1.3)
Reclassifications from AOCI, before Income Tax (Expense) Benefit
(1.3)
Income Tax (Expense) Benefit
(0.3)
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
(1.0)
Net Current Period Other Comprehensive Income (Loss)(1.0)
Balance in AOCI as of December 31, 2019$— 

Cash Flow Hedge –
For the Year Ended December 31, 2018Interest Rate
(in millions)
Balance in AOCI as of December 31, 2017$1.9 
Change in Fair Value Recognized in AOCI
— 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
(1.7)
Reclassifications from AOCI, before Income Tax (Expense) Benefit
(1.7)
Income Tax (Expense) Benefit
(0.4)
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
(1.3)
Net Current Period Other Comprehensive Income (Loss)(1.3)
ASU 2018-02 Adoption0.4 
Balance in AOCI as of December 31, 2018$1.0 
PSO
Cash Flow Hedge –
For the Year Ended December 31, 2020Interest Rate
(in millions)
Balance in AOCI as of December 31, 2019$1.1 
Change in Fair Value Recognized in AOCI
— 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
(1.3)
Reclassifications from AOCI, before Income Tax (Expense) Benefit
(1.3)
Income Tax (Expense) Benefit
(0.3)
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
(1.0)
Net Current Period Other Comprehensive Income (Loss)(1.0)
Balance in AOCI as of December 31, 2020$0.1 

Cash Flow Hedge –
For the Year Ended December 31, 2019Interest Rate
(in millions)
Balance in AOCI as of December 31, 2018$2.1 
Change in Fair Value Recognized in AOCI
— 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
(1.3)
Reclassifications from AOCI, before Income Tax (Expense) Benefit
(1.3)
Income Tax (Expense) Benefit
(0.3)
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
(1.0)
Net Current Period Other Comprehensive Income (Loss)(1.0)
Balance in AOCI as of December 31, 2019$1.1 

Cash Flow Hedge –
For the Year Ended December 31, 2018Interest Rate
(in millions)
Balance in AOCI as of December 31, 2017$2.6 
Change in Fair Value Recognized in AOCI
— 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
(1.3)
Reclassifications from AOCI, before Income Tax (Expense) Benefit
(1.3)
Income Tax (Expense) Benefit
(0.3)
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
(1.0)
Net Current Period Other Comprehensive Income (Loss)(1.0)
ASU 2018-02 Adoption0.5 
Balance in AOCI as of December 31, 2018$2.1 
SWEPCo
Pension and OPEB
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2020Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2019$(1.8)$(1.3)$1.8 $(1.3)
Change in Fair Value Recognized in AOCI
— — 3.2 3.2 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
1.9 — — 1.9 
Amortization of Prior Service Cost (Credit)
— (2.0)— (2.0)
Amortization of Actuarial (Gains) Losses
— 0.1 — 0.1 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
1.9 (1.9)— — 
Income Tax (Expense) Benefit
0.4 (0.4)— — 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
1.5 (1.5)— — 
Net Current Period Other Comprehensive Income (Loss)1.5 (1.5)3.2 3.2 
Balance in AOCI as of December 31, 2020$(0.3)$(2.8)$5.0 $1.9 

Pension and OPEB
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2019Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2018$(3.3)$(0.2)$(1.9)$(5.4)
Change in Fair Value Recognized in AOCI
— — 3.7 3.7 
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
1.9 — — 1.9 
Amortization of Prior Service Cost (Credit)
— (2.0)— (2.0)
Amortization of Actuarial (Gains) Losses
— 0.6 — 0.6 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
1.9 (1.4)— 0.5 
Income Tax (Expense) Benefit
0.4 (0.3)— 0.1 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
1.5 (1.1)— 0.4 
Net Current Period Other Comprehensive Income (Loss)1.5 (1.1)3.7 4.1 
Balance in AOCI as of December 31, 2019$(1.8)$(1.3)$1.8 $(1.3)

Pension and OPEB
AmortizationChanges in
Cash Flow Hedge – of DeferredFunded
For the Year Ended December 31, 2018Interest RateCostsStatusTotal
(in millions)
Balance in AOCI as of December 31, 2017$(6.0)$1.2 $0.8 $(4.0)
Change in Fair Value Recognized in AOCI
2.3 — (3.1)(0.8)
Amount of (Gain) Loss Reclassified from AOCI
Interest Expense (b)
2.1 — — 2.1 
Amortization of Prior Service Cost (Credit)
— (2.0)— (2.0)
Amortization of Actuarial (Gains) Losses
— 0.2 — 0.2 
Reclassifications from AOCI, before Income Tax (Expense) Benefit
2.1 (1.8)— 0.3 
Income Tax (Expense) Benefit
0.4 (0.4)— — 
Reclassifications from AOCI, Net of Income Tax (Expense) Benefit
1.7 (1.4)— 0.3 
Net Current Period Other Comprehensive Income (Loss)4.0 (1.4)(3.1)(0.5)
ASU 2018-02 Adoption(1.3)— 0.4 (0.9)
Balance in AOCI as of December 31, 2018$(3.3)$(0.2)$(1.9)$(5.4)

(a)The change in fair value includes $6 million and $4 million related to AEP's investment in joint venture wind farms acquired as part of the purchase of Sempra Renewables LLC for the years ended December 31, 2020 and December 31, 2019. See “Sempra Renewables LLC” section of Note 17 for additional information.
(b)Amounts reclassified to the referenced line item on the statements of income.