Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES
Net income	$ 69,733	$ 64,531
Depreciation and amortization
Net premiums and discounts on advances, consolidated obligations, investments and mortgage loans	25,529	28,290
Concessions on consolidated obligation bonds	1,418	3,204
Premises, equipment and computer software costs	3,614	4,716
Non-cash interest on mandatorily redeemable capital stock	10	21
Credit component of other-than-temporary impairment losses on held-to-maturity securities	0	360
Gains on early extinguishment of debt	(5,642)	0
Gains on other liabilities carried at fair value under the fair value option	0	(2,495)
Net increase in trading securities	(1,777)	(1,336)
Loss due to change in net fair value adjustment on derivative and hedging activities	65,549	74,486
Increase in accrued interest receivable	(5,791)	(14,896)
Decrease in other assets	1,498	2,119
Increase (decrease) in Affordable Housing Program (AHP) liability	1,296	(1,538)
Increase (decrease) in accrued interest payable	(5,081)	11,722
Increase (decrease) in other liabilities	1,999	(4,554)
Total adjustments	82,622	100,099
Net cash provided by operating activities	152,355	164,630
INVESTING ACTIVITIES
Net decrease (increase) in interest-bearing deposits, including swap collateral pledged	335,298	(556,529)
Net decrease (increase) in securities purchased under agreements to resell	2,500,000	(1,500,000)
Net decrease (increase) in federal funds sold	513,000	(793,000)
Decrease in loan to other FHLBank	0	35,000
Net increase in short-term trading securities held for investment	(699,164)	0
Purchases of available-for-sale securities	0	(806,724)
Proceeds from maturities of long-term held-to-maturity securities	1,399,387	1,506,559
Purchases of long-term held-to-maturity securities	(1,331,882)	(220,250)
Principal collected on advances	366,535,440	351,439,739
Advances made	(365,019,232)	(352,127,455)
Principal collected on mortgage loans held for portfolio	24,888	31,659
Purchases of premises, equipment and computer software	(981)	(2,540)
Net cash provided by (used in) investing activities	4,256,754	(2,993,541)
FINANCING ACTIVITIES
Net decrease in deposits, including swap collateral held	(301,131)	(445,818)
Net payments on derivative contracts with financing elements	(151,296)	(48,091)
Increase in loan from other FHLBank	0	40,000
Net proceeds from issuance of consolidated obligations
Discount notes	138,034,921	309,237,355
Bonds	5,672,427	20,435,132
Debt issuance costs	(971)	(2,407)
Payments for maturing and retiring consolidated obligations
Discount notes	(138,504,767)	(313,342,672)
Bonds	(9,141,573)	(14,154,655)
Proceeds from issuance of capital stock	716,886	535,053
Proceeds from issuance of mandatorily redeemable capital stock	18	0
Payments for redemption of mandatorily redeemable capital stock	(351)	(12,117)
Payments for repurchase/redemption of capital stock	(770,885)	(544,197)
Cash dividends paid	(130)	(135)
Net cash provided by (used in) financing activities	(4,446,852)	1,697,448
Net decrease in cash and cash equivalents	(37,743)	(1,131,463)
Cash and cash equivalents at beginning of the period	920,780	1,152,467
Cash and cash equivalents at end of the period	883,037	21,004
Supplemental Disclosures:
Interest paid	111,311	126,211
AHP payments, net	6,454	8,710
Stock dividends issued	3,066	3,262
Dividends paid through issuance of mandatorily redeemable capital stock	24	16
Net capital stock reclassified to mandatorily redeemable capital stock	$ 25,882	$ 1,632