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Fair Value Measurements
6 Months Ended
Jun. 30, 2013
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS
FAIR VALUE MEASUREMENTS
As of June 30, 2013, assets and liabilities measured at fair value on a recurring basis during the period, together with the level of the fair value hierarchy in which they fall, were as follows:
 
 
 
Fair Value Measurements Using
 
 
As of June 30, 2013:
 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 
Total
 
 
(in millions)
Southern Company
 
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
16

 
$

 
$
16

Interest rate derivatives
 

 
6

 

 
6

Nuclear decommissioning trusts(a)
 
525

 
828

 

 
1,353

Cash equivalents
 
159

 

 

 
159

Other investments
 
9

 

 
15

 
24

Total
 
$
693

 
$
850

 
$
15

 
$
1,558

Liabilities:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
89

 
$

 
$
89

 
 
 
 
 
 
 
 
 
Alabama Power
 
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
4

 
$

 
$
4

Nuclear decommissioning trusts:(b)
 
 
 
 
 
 
 
 
Domestic equity
 
328

 
70

 

 
398

Foreign equity
 
29

 
56

 

 
85

U.S. Treasury and government agency securities
 

 
28

 

 
28

Corporate bonds
 

 
102

 

 
102

Mortgage and asset backed securities
 

 
22

 

 
22

Other
 

 
9

 

 
9

Total
 
$
357

 
$
291

 
$

 
$
648

Liabilities:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
15

 
$

 
$
15

 
 
Fair Value Measurements Using
 
 
As of June 30, 2013:
 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 
Total
 
 
(in millions)
Georgia Power
 
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
4

 
$

 
$
4

Nuclear decommissioning trusts:(b) (c)
 
 
 
 
 
 
 
 
Domestic equity
 
168

 
1

 

 
169

Foreign equity
 

 
115

 

 
115

U.S. Treasury and government agency securities
 

 
97

 

 
97

Municipal bonds
 

 
57

 

 
57

Corporate bonds
 

 
130

 

 
130

Mortgage and asset backed securities
 

 
120

 

 
120

Other
 

 
21

 

 
21

Total
 
$
168

 
$
545

 
$

 
$
713

Liabilities:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
33

 
$

 
$
33

 
 
 
 
 
 
 
 
 
Gulf Power
 
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
4

 
$

 
$
4

Cash equivalents
 
16

 

 

 
16

Total
 
$
16

 
$
4

 
$

 
$
20

Liabilities:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
25

 
$

 
$
25

 
 
 
 
 
 
 
 
 
Mississippi Power
 
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
2

 
$

 
$
2

Cash equivalents
 
99

 

 

 
99

Total
 
$
99

 
$
2

 
$

 
$
101

Liabilities:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
15

 
$

 
$
15

 
 
 
 
 
 
 
 
 
Southern Power
 
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
2

 
$

 
$
2

Liabilities:
 
 
 
 
 
 
 
 
Energy-related derivatives
 
$

 
$
1

 
$

 
$
1

 
(a)
For additional detail, see the nuclear decommissioning trusts sections for Alabama Power and Georgia Power in this table.
(b)
Excludes receivables related to investment income, pending investment sales, and payables related to pending investment purchases.
(c)
Includes the investment securities pledged to creditors and cash collateral received and excludes payables related to the securities lending program. As of June 30, 2013, approximately $38 million of the fair market value of Georgia Power's nuclear decommissioning trust funds' securities were on loan and pledged to creditors under the funds' managers' securities lending program.
Valuation Methodologies
The energy-related derivatives primarily consist of over-the-counter financial products for natural gas and physical power products including, from time to time, basis swaps. These are standard products used within the energy industry and are valued using the market approach. The inputs used are mainly from observable market sources, such as forward natural gas prices, power prices, implied volatility, and LIBOR interest rates. Interest rate and foreign currency derivatives are also standard over-the-counter financial products valued using the market approach. Inputs for interest rate derivatives include LIBOR interest rates, interest rate futures contracts, and occasionally implied volatility of interest rate options. Inputs for foreign currency derivatives are from observable market sources. See Note (H) herein for additional information on how these derivatives are used.
"Other investments" include investments in funds that are valued using the market approach and income approach. Securities that are traded in the open market are valued at the closing price on their principal exchange as of the measurement date. Discounts are applied in accordance with GAAP when certain trading restrictions exist. For investments that are not traded in the open market, the price paid will have been determined based on market factors including comparable multiples and the expectations regarding cash flows and business plan execution. As the investments mature or if market conditions change materially, further analysis of the fair market value of the investment is performed. This analysis is typically based on a metric, such as multiple of earnings, revenues, earnings before interest and income taxes, or earnings adjusted for certain cash changes. These multiples are based on comparable multiples for publicly traded companies or other relevant prior transactions.
For fair value measurements of investments within the nuclear decommissioning trusts and rabbi trust funds, specifically the fixed income assets using significant other observable inputs and unobservable inputs, the primary valuation technique used is the market approach. External pricing vendors are designated for each of the asset classes in the nuclear decommissioning trusts and rabbi trust funds with each security discriminately assigned a primary pricing source, based on similar characteristics.
A market price secured from the primary source vendor is then evaluated by management in its valuation of the assets within the trusts. As a general approach, market pricing vendors gather market data (including indices and market research reports) and integrate relative credit information, observed market movements, and sector news into proprietary pricing models, pricing systems, and mathematical tools. Dealer quotes and other market information including live trading levels and pricing analysts' judgment are also obtained when available.
As of June 30, 2013, the fair value measurements of investments calculated at net asset value per share (or its equivalent), as well as the nature and risks of those investments, were as follows:
As of June 30, 2013:
 
Fair
Value
 
Unfunded
Commitments
 
Redemption
Frequency
 
Redemption
Notice Period
 
 
     (in millions)
 
 
 
 
Southern Company
 
 
 
 
 
 
Nuclear decommissioning trusts:
 
 
 
 
 
 
 
 
Foreign equity funds
 
$
115

 
None
 
Monthly
 
5 days
Corporate bonds - commingled funds
 
6

 
None
 
Daily
 
1 to 3 days
Equity - commingled funds
 
56

 
None
 
Daily/Monthly
 
Daily/7 days
Other - commingled funds
 
21

 
None
 
Daily/Monthly
 
Daily/7 days
Trust-owned life insurance
 

 
None
 
Daily
 
15 days
Cash equivalents:
 
 
 
 
 
 
 
 
Money market funds
 
159

 
None
 
Daily
 
Not applicable
Alabama Power
 
 
 
 
 
 
 
 
Nuclear decommissioning trusts:
 
 
 
 
 
 
 
 
Equity - commingled funds
 
56

 
None
 
Daily/Monthly
 
Daily/7 days
Trust-owned life insurance
 
99

 
None
 
Daily
 
15 days
Georgia Power
 
 
 
 
 
 
 
 
Nuclear decommissioning trusts:
 
 
 
 
 
 
 
 
Foreign equity funds
 
115

 
None
 
Monthly
 
5 days
Corporate bonds - commingled funds
 
6

 
None
 
Daily
 
Not applicable
Other - commingled funds
 
21

 
None
 
Daily
 
Not applicable
Gulf Power
 
 
 
 
 
 
 
 
Cash equivalents:
 
 
 
 
 
 
 
 
Money market funds
 
16

 
None
 
Daily
 
Not applicable
Mississippi Power
 
 
 
 
 
 
 
 
Cash equivalents:
 
 
 
 
 
 
 
 
Money market funds
 
99

 
None
 
Daily
 
Not applicable

The NRC requires licensees of commissioned nuclear power reactors to establish a plan for providing reasonable assurance of funds for future decommissioning. Alabama Power and Georgia Power have external trust funds (the Funds) to comply with the NRC's regulations. The foreign equity fund in Georgia Power's nuclear decommissioning trusts seeks to provide long-term capital appreciation. In pursuing this investment objective, the foreign equity fund primarily invests in a diversified portfolio of equity securities of foreign companies, including those in emerging markets. These equity securities may include, but are not limited to, common stocks, preferred stocks, real estate investment trusts, convertible securities and depositary receipts, including American depositary receipts, European depositary receipts and global depositary receipts, and rights and warrants to buy common stocks. Georgia Power may withdraw all or a portion of its investment on the last business day of each month subject to a minimum withdrawal of $1 million, provided that a minimum investment of $10 million remains. If notices of withdrawal exceed 20% of the aggregate value of the foreign equity fund, then the foreign equity fund's board may refuse to permit the withdrawal of all such investments and may scale down the amounts to be withdrawn pro rata and may further determine that any withdrawal that has been postponed will have priority on the subsequent withdrawal date.
The commingled funds in Georgia Power's nuclear decommissioning trusts are invested primarily in a diversified portfolio, including, but not limited to, commercial paper, notes, repurchase agreements, and other evidences of indebtedness with a maturity not exceeding 13 months from the date of purchase. The commingled funds will, however, generally maintain a dollar-weighted average portfolio maturity of 90 days or less. The assets may be longer term investment grade fixed income obligations with maturity shortening provisions. The primary objective for the commingled funds is a high level of current income consistent with stability of principal and liquidity. The commingled funds included with corporate bonds represent the investment of cash collateral received under the Funds' managers' securities lending program that can only be sold upon the return of the loaned securities. See Note 1 to the financial statements of Southern Company and Georgia Power under "Nuclear Decommissioning" in Item 8 of the Form 10-K for additional information.
Alabama Power's nuclear decommissioning trust includes investments in Trust-Owned Life Insurance (TOLI). The taxable nuclear decommissioning trust invests in the TOLI in order to minimize the impact of taxes on the portfolio and can draw on the value of the TOLI through death proceeds, loans against the cash surrender value, and/or the cash surrender value, subject to legal restrictions. The amounts reported in the table above reflect the fair value of investments the insurer has made in relation to the TOLI agreements. The nuclear decommissioning trust does not own the underlying investments, but the fair value of the investments approximates the cash surrender value of the TOLI policies. The investments made by the insurer are in commingled funds. The commingled funds primarily include investments in domestic and international equity securities and predominantly high-quality fixed income securities. These fixed income securities may include U.S. Treasury and government agency fixed income securities, non-U.S. government and agency fixed income securities, domestic and foreign corporate fixed income securities, and, to some degree, mortgage and asset backed securities. The passively managed funds seek to replicate the performance of a related index. The actively managed funds seek to exceed the performance of a related index through security analysis and selection.
Southern Company, Alabama Power, and Georgia Power continue to elect the option to fair value investment securities held in the nuclear decommissioning trust funds. For the three and six months ended June 30, 2013, the fair value of the funds, including reinvested interest and dividends reduced by the funds' expenses, decreased by $7 million and increased by $51 million, respectively, at Southern Company. For the three and six months ended June 30, 2013, Alabama Power recorded an increase in fair value of $5 million and $43 million, respectively, as an increase in regulatory liabilities. Georgia Power recorded a decrease in fair value of $12 million as an increase of its regulatory asset related to its asset retirement obligations for the three months ended June 30, 2013 and an increase of $8 million as a decrease of its regulatory asset related to its asset retirement obligations for the six months ended June 30, 2013.
The money market funds are short-term investments of excess funds in various money market mutual funds, which are portfolios of short-term debt securities. The money market funds are regulated by the SEC and typically receive the highest rating from credit rating agencies. Regulatory and rating agency requirements for money market funds include minimum credit ratings and maximum maturities for individual securities and a maximum weighted average portfolio maturity. Redemptions are available on a same day basis up to the full amount of the investment in the money market funds.
As of June 30, 2013, other financial instruments for which the carrying amount did not equal fair value were as follows: 
 
 
Carrying
Amount
 
Fair 
Value
 
 
(in millions)
Long-term debt:
 
 
 
 
Southern Company
 
$
21,942

 
$
22,734

Alabama Power
 
$
6,179

 
$
6,573

Georgia Power
 
$
9,622

 
$
9,878

Gulf Power
 
$
1,335

 
$
1,391

Mississippi Power
 
$
2,209

 
$
2,201

Southern Power
 
$
1,316

 
$
1,377


The fair values are determined using Level 2 measurements and are based on quoted market prices for the same or similar issues or on the current rates offered to Southern Company, Alabama Power, Georgia Power, Gulf Power, Mississippi Power, and Southern Power.