Fair Value Measures and Disclosures (Details) - USD ($)
$ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Cash and due from banks |
|
$ 7,729
|
$ 39,430
|
| Trading securities |
|
6,266,577
|
3,514,824
|
| Available-for-sale securities |
[1] |
17,751,637
|
19,308,192
|
| Debt Securities, Held-to-maturity |
[2] |
921,982
|
1,048,479
|
| Debt Securities, Held-to-maturity, Fair Value |
|
926,625
|
1,048,632
|
| Accrued interest receivable (Note 8) |
|
260,072
|
287,082
|
| Derivative assets |
|
33,695
|
37,898
|
| Derivative Asset, Subject to Master Netting Arrangement, Gross Liability and Collateral, Obligation to Return Cash, Offset |
[3] |
(476,863)
|
(310,987)
|
| Other Assets, Fair Value Disclosure |
|
28,496
|
24,997
|
| Mandatorily redeemable capital stock |
|
85,231
|
7,967
|
| Accrued interest payable |
|
428,501
|
356,354
|
| Derivative liabilities |
|
10,116
|
4,355
|
| Derivative Liability, Subject to Master Netting Arrangement, Gross Asset and Collateral, Right to Reclaim Cash, Offset |
[3] |
(481,382)
|
(617,540)
|
| Fair Value, Inputs, Level 1 [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Cash and due from banks |
|
7,729
|
39,430
|
| Interest-bearing Deposits, Fair Value Disclosure |
|
0
|
0
|
| Securities Purchased under Agreements to Resell, Fair Value Disclosure |
|
0
|
0
|
| Federal Funds Sold, Fair Value Disclosure |
|
0
|
0
|
| Trading securities |
|
0
|
0
|
| Available-for-sale securities |
|
0
|
0
|
| Debt Securities, Held-to-maturity, Fair Value |
|
0
|
0
|
| Federal Home Loan Bank Advances, Fair Value Disclosure |
|
0
|
0
|
| Loans Receivable, Fair Value Disclosure |
|
0
|
0
|
| Accrued interest receivable (Note 8) |
|
0
|
0
|
| Derivative assets |
|
0
|
0
|
| Other Assets, Fair Value Disclosure |
|
28,496
|
24,997
|
| Unsecured loans to members included in other assets |
|
0
|
0
|
| Deposits, Fair Value Disclosure |
|
0
|
0
|
| Mandatorily redeemable capital stock |
|
85,231
|
7,967
|
| Accrued interest payable |
|
0
|
0
|
| Derivative liabilities |
|
0
|
0
|
| Fair Value, Inputs, Level 1 [Member] | Consolidated Obligation Bonds [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Debt Instrument, Fair Value Disclosure |
|
0
|
0
|
| Fair Value, Inputs, Level 1 [Member] | Consolidated Obligation Discount Notes [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Short-term Debt, Fair Value |
|
0
|
0
|
| Fair Value, Inputs, Level 2 [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Cash and due from banks |
|
0
|
0
|
| Interest-bearing Deposits, Fair Value Disclosure |
|
3,509,536
|
2,725,508
|
| Securities Purchased under Agreements to Resell, Fair Value Disclosure |
|
13,450,000
|
16,650,000
|
| Federal Funds Sold, Fair Value Disclosure |
|
11,124,000
|
7,409,000
|
| Trading securities |
|
6,266,577
|
3,514,824
|
| Available-for-sale securities |
|
17,751,637
|
19,308,192
|
| Debt Securities, Held-to-maturity, Fair Value |
|
926,625
|
1,048,632
|
| Federal Home Loan Bank Advances, Fair Value Disclosure |
|
47,444,124
|
50,905,437
|
| Loans Receivable, Fair Value Disclosure |
|
6,535,549
|
6,238,518
|
| Accrued interest receivable (Note 8) |
|
260,072
|
287,082
|
| Derivative assets |
|
510,558
|
348,885
|
| Other Assets, Fair Value Disclosure |
|
0
|
0
|
| Unsecured loans to members included in other assets |
|
0
|
0
|
| Deposits, Fair Value Disclosure |
|
2,762,205
|
2,195,861
|
| Mandatorily redeemable capital stock |
|
0
|
0
|
| Accrued interest payable |
|
428,501
|
356,354
|
| Derivative liabilities |
|
491,498
|
621,895
|
| Fair Value, Inputs, Level 2 [Member] | Consolidated Obligation Bonds [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Debt Instrument, Fair Value Disclosure |
|
55,630,995
|
57,669,223
|
| Fair Value, Inputs, Level 2 [Member] | Consolidated Obligation Discount Notes [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Short-term Debt, Fair Value |
|
40,019,335
|
40,186,405
|
| Fair Value, Inputs, Level 3 [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Cash and due from banks |
|
0
|
0
|
| Interest-bearing Deposits, Fair Value Disclosure |
|
0
|
0
|
| Securities Purchased under Agreements to Resell, Fair Value Disclosure |
|
0
|
0
|
| Federal Funds Sold, Fair Value Disclosure |
|
0
|
0
|
| Trading securities |
|
0
|
0
|
| Available-for-sale securities |
|
0
|
0
|
| Debt Securities, Held-to-maturity, Fair Value |
|
0
|
0
|
| Federal Home Loan Bank Advances, Fair Value Disclosure |
|
0
|
0
|
| Loans Receivable, Fair Value Disclosure |
|
0
|
0
|
| Accrued interest receivable (Note 8) |
|
0
|
0
|
| Derivative assets |
|
0
|
0
|
| Other Assets, Fair Value Disclosure |
|
0
|
|
| Unsecured loans to members included in other assets |
|
44,753
|
44,633
|
| Deposits, Fair Value Disclosure |
|
0
|
0
|
| Mandatorily redeemable capital stock |
|
0
|
0
|
| Accrued interest payable |
|
0
|
0
|
| Derivative liabilities |
|
0
|
0
|
| Fair Value, Inputs, Level 3 [Member] | Consolidated Obligation Bonds [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Debt Instrument, Fair Value Disclosure |
|
0
|
0
|
| Fair Value, Inputs, Level 3 [Member] | Consolidated Obligation Discount Notes [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Short-term Debt, Fair Value |
|
0
|
0
|
| Carrying Value [Member} |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Cash and due from banks |
|
7,729
|
39,430
|
| Interest-bearing Deposits, Fair Value Disclosure |
|
3,509,536
|
2,725,508
|
| Securities Purchased under Agreements to Resell, Fair Value Disclosure |
|
13,450,000
|
16,650,000
|
| Federal Funds Sold, Fair Value Disclosure |
|
11,124,000
|
7,409,000
|
| Trading securities |
|
6,266,577
|
3,514,824
|
| Available-for-sale securities |
|
17,751,637
|
19,308,192
|
| Debt Securities, Held-to-maturity |
|
921,982
|
1,048,479
|
| Federal Home Loan Bank Advances, Fair Value Disclosure |
|
47,410,991
|
50,820,106
|
| Loans Receivable, Fair Value Disclosure |
|
6,909,890
|
6,555,131
|
| Accrued interest receivable (Note 8) |
|
260,072
|
287,082
|
| Derivative assets |
|
33,695
|
37,898
|
| Other Assets, Fair Value Disclosure |
|
28,496
|
24,997
|
| Unsecured loans to members included in other assets |
|
44,753
|
44,633
|
| Deposits, Fair Value Disclosure |
|
2,762,278
|
2,195,932
|
| Mandatorily redeemable capital stock |
|
85,231
|
7,967
|
| Accrued interest payable |
|
428,501
|
356,354
|
| Derivative liabilities |
|
10,116
|
4,355
|
| Carrying Value [Member} | Consolidated Obligation Bonds [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Debt Instrument, Fair Value Disclosure |
|
55,899,046
|
57,885,556
|
| Carrying Value [Member} | Consolidated Obligation Discount Notes [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Short-term Debt, Fair Value |
|
40,033,146
|
40,185,289
|
| Fair Value [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Cash and due from banks |
|
7,729
|
39,430
|
| Interest-bearing Deposits, Fair Value Disclosure |
|
3,509,536
|
2,725,508
|
| Securities Purchased under Agreements to Resell, Fair Value Disclosure |
|
13,450,000
|
16,650,000
|
| Federal Funds Sold, Fair Value Disclosure |
|
11,124,000
|
7,409,000
|
| Trading securities |
|
6,266,577
|
3,514,824
|
| Available-for-sale securities |
|
17,751,637
|
19,308,192
|
| Debt Securities, Held-to-maturity, Fair Value |
|
926,625
|
1,048,632
|
| Federal Home Loan Bank Advances, Fair Value Disclosure |
|
47,444,124
|
50,905,437
|
| Loans Receivable, Fair Value Disclosure |
|
6,535,549
|
6,238,518
|
| Accrued interest receivable (Note 8) |
|
260,072
|
287,082
|
| Derivative assets |
|
33,695
|
37,898
|
| Other Assets, Fair Value Disclosure |
|
28,496
|
24,997
|
| Unsecured loans to members included in other assets |
|
44,753
|
44,633
|
| Deposits, Fair Value Disclosure |
|
2,762,205
|
2,195,861
|
| Mandatorily redeemable capital stock |
|
85,231
|
7,967
|
| Accrued interest payable |
|
428,501
|
356,354
|
| Derivative liabilities |
|
10,116
|
4,355
|
| Fair Value [Member] | Consolidated Obligation Bonds [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Debt Instrument, Fair Value Disclosure |
|
55,630,995
|
57,669,223
|
| Fair Value [Member] | Consolidated Obligation Discount Notes [Member] |
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
| Short-term Debt, Fair Value |
|
$ 40,019,335
|
$ 40,186,405
|
|
|