The following table presents changes in accumulated other comprehensive income (loss) balances:



Three Months Ended June 30,	2015			2014
	(in millions)
Unrealized gains (losses) on investment securities:
Balance at beginning of period	$	130		$	112
Other comprehensive income (loss) for period:
Net unrealized gains (losses) arising during period, net of tax of $(117) million and $110 million, respectively	(198		)	171
Reclassification adjustment for (gains) losses realized in net income, net of tax of $(13) million and $3 million, respectively⁽¹⁾	(22		)	4
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity realized in net income, net of tax of $4 million⁽²⁾	7			—
Total other comprehensive income (loss) for period	(213		)	175
Balance at end of period	(83		)	287
Unrealized losses on other-than-temporarily impaired debt securities held-to-maturity:
Balance at beginning of period	—			(59		)
Reclassification adjustment related to the accretion of unrealized other-than-temporary impairment, net of tax of $1 million⁽³⁾	—			2
Total other comprehensive income for period	—			2
Balance at end of period	—			(57		)
Unrealized losses on derivatives designated as cash flow hedges:
Balance at beginning of period	(175		)	(103		)
Other comprehensive income (loss) for period:
Net gains (losses) arising during period, net of tax of $19 million and $(10) million, respectively	30			(16		)
Reclassification adjustment for losses realized in net income, net of tax of $1 million and $1 million, respectively⁽⁴⁾	1			1
Total other comprehensive income (loss) for period	31			(15		)
Balance at end of period	(144		)	(118		)
Pension and postretirement benefit liability:
Balance at beginning and end of period	(2		)	2
Total accumulated other comprehensive income (loss) at end of period	$	(229	)	$	114



Six Months Ended June 30,	2015			2014
	(in millions)
Unrealized gains (losses) on investment securities:
Balance at beginning of period	$	158		$	(18	)
Other comprehensive income (loss) for period:
Net unrealized gains (losses) arising during period, net of tax of $(128) million and $202 million, respectively	(217		)	315
Reclassification adjustment for gains realized in net income, net of tax of $(22) million and $(6) million, respectively⁽¹⁾	(36		)	(10		)
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity realized in net income, net of tax of $7 million⁽²⁾	12			—
Total other comprehensive income (loss) for period	(241		)	305
Balance at end of period	(83		)	287
Unrealized losses on other-than-temporarily impaired debt securities held-to-maturity:
Balance at beginning of period	—			(60		)
Reclassification adjustment related to the accretion of unrealized other-than-temporary impairment, net of tax of $3 million⁽³⁾	—			3
Total other comprehensive income for period	—			3
Balance at end of period	—			(57		)
Unrealized losses on derivatives designated as cash flow hedges:
Balance at beginning of period	(156		)	(83		)
Other comprehensive income (loss) for period:
Net unrealized gains (losses) arising during period, net of tax of $7 million and $(23) million, respectively	9			(37		)
Reclassification adjustment for losses realized in net income, net of tax of $2 million and $1 million, respectively⁽⁴⁾	3			2
Total other comprehensive income (loss) for period	12			(35		)
Balance at end of period	(144		)	(118		)
Pension and postretirement benefit liability:
Balance at beginning of period	(3		)	2
Other comprehensive income for period:
Change in unfunded pension and postretirement liability, net of tax of less than $1 million	1			—
Total other comprehensive income for period	1			—
Balance at and end of period	(2		)	2
Total accumulated other comprehensive income (loss) at end of period	$	(229	)	$	114


⁽¹⁾	Amount reclassified to net income is included in other securities gains, net in our consolidated statement of income.

⁽²⁾

Amount amortized to net income is included in interest income in our consolidated statement of income. During the third quarter of 2014, we transferred securities from available-for-sale to held-to-maturity. At the date of transfer, AOCI included net pretax unrealized losses of $234 million related to the transferred securities which will be amortized over the remaining contractual life of each security as an adjustment of yield in a manner consistent with the amortization of any premium or discount.


⁽³⁾	Amount reclassified to the carrying value of the debt securities is included in securities held-to-maturity in our consolidated balance sheet.


⁽⁴⁾	Amount reclassified to net income is included in interest income (expense) in our consolidated statement of income.