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Fair Value Measurements
3 Months Ended
Mar. 31, 2015
Fair Value Disclosures [Abstract]  
Fair Value Measurements
FAIR VALUE MEASUREMENTS

Assets (Liabilities) Measured at Fair Value on a Recurring Basis
(in millions)
March 31,
2015
Level 1
Level 2
Cash equivalents
$
1,618

$
1,618

$

Short-term investments
 
 

U.S. government and agency securities
135

63

72

Asset- and mortgage-backed securities
395


395

Corporate obligations
894


894

Other fixed income securities
23


23

Restricted cash equivalents and investments
45

45


Long-term investments
99

73

26

Hedge derivatives, net
 
 
 
Fuel hedge contracts
(1,428
)
(68
)
(1,360
)
Interest rate contract
(1
)

(1
)
Foreign currency exchange contracts
96


96


(in millions)
December 31,
2014
Level 1
Level 2
Cash equivalents
$
1,612

$
1,612

$

Short-term investments
 
 


U.S. government and agency securities
59


59

Asset- and mortgage-backed securities
392


392

Corporate obligations
749


749

Other fixed income securities
17


17

Restricted cash equivalents and investments
37

37


Long-term investments
118

90

28

Hedge derivatives, net
 
 
 
Fuel hedge contracts
(1,848
)
(167
)
(1,681
)
Interest rate contract
(7
)

(7
)
Foreign currency exchange contracts
73


73



Cash Equivalents and Restricted Cash Equivalents and Investments. Cash equivalents generally consist of money market funds. Restricted cash equivalents and investments primarily support letters of credit that relate to certain projected self-insurance obligations and airport commitments and generally consist of money market funds and time deposits. The fair value of these investments is based on a market approach using prices and other relevant information generated by market transactions involving identical or comparable assets.

Short-Term Investments. The fair values of short-term investments are based on a market approach using industry standard valuation techniques that incorporate observable inputs such as quoted market prices, interest rates, benchmark curves, credit ratings of the security and other observable information.

Long-Term Investments. Our long-term investments that are measured at fair value primarily consist of equity investments in Grupo Aeroméxico, S.A.B. de C.V., the parent company of Aeroméxico, and GOL Linhas Aéreas Inteligentes, S.A, the parent company of VRG Linhas Aéreas (operating as GOL). Shares of the parent companies of Aeroméxico and GOL are traded on public exchanges and we have valued our investments based on quoted market prices. The investments are classified in other noncurrent assets.

Hedge Derivatives. Our derivative contracts are generally negotiated with counterparties without going through a public exchange. Accordingly, our fair value assessments give consideration to the risk of counterparty default (as well as our own credit risk).

Fuel Contracts. Our fuel hedge portfolio consists of options, swaps and futures. The hedge contracts include crude oil, diesel fuel and jet fuel, as these commodities are highly correlated with the price of jet fuel that we consume. Option contracts are valued under an income approach using option pricing models based on data either readily observable in public markets, derived from public markets or provided by counterparties who regularly trade in public markets. Volatilities used in these valuations ranged from 26% to 73% depending on the maturity dates, underlying commodities and strike prices of the option contracts. Swap contracts are valued under an income approach using a discounted cash flow model based on data either readily observable or derived from public markets. Discount rates used in these valuations vary with the maturity dates of the respective contracts and are based on LIBOR. Futures contracts and options on futures contracts are traded on a public exchange and valued based on quoted market prices.

Interest Rate Contract. Our interest rate derivative is a swap contract, which is valued based on data readily observable in public markets.

Foreign Currency Exchange Contracts. Our foreign currency derivatives consist of Japanese yen and Canadian dollar forward contracts and are valued based on data readily observable in public markets.