13. Accumulated Other Comprehensive Income (Loss)

The components of Accumulated other comprehensive income (loss) are as follows (in millions):


	Pension and Retiree Medical Liability			Unrealized Gain/(Loss) on Investments			Derivative Financial Instruments			Income Tax Benefit/ (Expense)			Total

Balance at December 31, 2010	$	(2,800	)		(5	)		153		$	(103	)	$	(2,755	)
Current year change		(1,216	)		–									(1,216	)
Amortization of actuarial loss and prior service cost		130			–			–			–			130
Reclassification of derivative financial instruments into earnings		–			–			(313	)		–			(313	)
Change in fair value of derivative financial instruments		–			–			190			–			190

Balance at December 31, 2011	$	(3,886	)	$	(5	)	$	30		$	(103	)	$	(3,964	)

As of December 31, 2011, the Company estimates that during the next twelve months it will reclassify from Accumulated other comprehensive loss into earnings approximately $11 million in net gains (based on prices as of December 31, 2011) related to its fuel derivative hedges.

Amounts allocated to other comprehensive income for income taxes as further described in Note 9 will remain in Accumulated other comprehensive income until the Company ceases all related activities, such as termination of the pension plan.