Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value, Assets Measured on Recurring Basis [Table Text Block]



(in millions)	June 30, 2012			Level 1		Level 2			Level 3
Cash equivalents	$	2,243		$	2,243	$	—		$	—
Short-term investments	959			959		—			—
Restricted cash equivalents and investments	382			382		—			—
Long-term investments	196			83		24			89
Hedge derivatives, net
Fuel hedge contracts	(253		)	28		(281		)	—
Interest rate contracts	(78		)	—		(78		)	—
Foreign currency exchange contracts	(6		)	—		(6		)	—



(in millions)	December 31, 2011			Level 1		Level 2			Level 3
Cash equivalents	$	2,357		$	2,357	$	—		$	—
Short-term investments	958			958		—			—
Restricted cash equivalents and investments	341			341		—			—
Long-term investments	188			55		24			109
Hedge derivatives, net
Fuel hedge contracts	70			—		70			—
Interest rate contracts	(91		)	—		(91		)	—
Foreign currency exchange contracts	(89		)	—		(89		)	—

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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