The following table provides the components of accumulated other comprehensive income for first three months of 2013:



(in millions)	Foreign Currency Translation			Postretirement Benefit Plans			Derivative Instruments			Total
Balance at December 31, 2012	$	336		$	(222	)	$	1		$	115
Foreign currency translation adjustment	(43		)	—			—			(43		)
Amortization of net actuarial loss on postretirement benefit plans into:
Cost of revenue	—			1			—			1
Selling, general and administrative expenses	—			2			—			2
Other non-operating expense, net	—			1			—			1
Income tax expense on amortization of postretirement benefit plan items	—			(1		)	—			(1		)
Unrealized loss on foreign exchange agreements	—			—			(2		)	(2		)
Reclassification of unrealized gain on foreign exchange agreements into revenue	—			—			(1		)	(1		)
Balance at March 31, 2013	$	293		$	(219	)	$	(2	)	$	72