Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 93	$ 107	$ 194	$ 221
Net noncredit portion of other-than-temporary impairment losses on available-for-sale securities:
Net change in fair value on other-than-temporarily impaired available-for-sale securities	(10)	(2)	(19)	(18)
Reclassification of noncredit portion of impairment losses included in net income	2	1	3	1
Total net noncredit portion of other-than-temporary impairment losses on available-for-sale securities	(8)	(1)	(16)	(17)
Pension and postretirement benefit plans	0	1	1	2
Total other comprehensive loss	(8)	0	(15)	(15)
Total comprehensive income	$ 85	$ 107	$ 179	$ 206

Not applicable.

No definition available.

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The amount of total net non-credit portion of other than temporary impairment (OTTI) related losses on debt securities categorized as Available-for-sale.

+ References

No definition available.

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Amount of increase (decrease) in equity after Federal Home Loan Bank (FHLBank) assessments from transactions and other events and circumstances from non-owner sources attributable to the reporting entity. Includes changes in equity except those resulting from investments by owners and distributions to owners. Excludes transactions directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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Amount of profit (loss) after Federal Home Loan Bank (FHLBank) assessments attributable to the parent.

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Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive (income) loss for defined benefit plan, attributable to parent entity.

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Amount before tax of other comprehensive income (loss) attributable to parent entity.

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Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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Amount before tax of reclassification adjustment for other than temporary impairment (OTTI) related to factors other than credit loss on a previously impaired investment in available-for-sale debt security.

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