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Pledged Assets, Accepted Collateral and Restricted Assets
 12 Months Ended
Dec. 31, 2023
Financial Instruments Owned and Pledged as Collateral [Abstract]  
Pledged Assets, Accepted Collateral and Restricted Assets Pledged Assets, Accepted Collateral and Restricted Assets
Pledged Assets. For our liquidity management strategy, we may pledge loans and/or securities to various financial market utilities to allow for client payment, clearing and settlement processing as part of our custody services. We may pledge loans or securities to Central Banks, Federal Home Loan Bank (FHLB) of Chicago and third parties for various purposes, for example: securing public and trust deposits, repurchase agreements, borrowings and derivative contracts.
For the year ended December 31, 2023 and 2022, respectively, $1.1 billion and $453.9 million of collateral we pledge, related to loans and/or securities, is eligible to be repledged or sold by the secured party. The following table presents the carrying value of Northern Trust’s pledged assets by type.

TABLE 126: TYPE OF PLEDGED ASSETS
FOR THE YEAR ENDED DECEMBER 31,
(In Billions)20232022
Debt Securities(1)
$33.0 $31.4 
Loans(2)
10.3 11.8 
Total Pledged Assets$43.3 $43.2 
(1) Debt securities are comprised of held to maturity and available for sale securities.
(2) Loans pledged at the FHLB of Chicago and the Federal Reserve Bank of Chicago.
Accepted Collateral. Northern Trust accepts financial assets as collateral that it may, in some instances, be permitted to repledge or sell. The collateral is generally obtained under certain reverse repurchase agreements and derivative contracts. The following table presents the fair value of securities accepted as collateral.

TABLE 127: ACCEPTED COLLATERAL
FOR THE YEAR ENDED DECEMBER 31,
(In Millions)20232022
Collateral that may be repledged or sold
Reverse repurchase agreements(1)
$62,767.8 $12,119.4 
Derivative contracts
12.2 5.0 
Collateral that may not be repledged or sold
Reverse repurchase agreements— 450.0 
Total Collateral Accepted
$62,780.0 $12,574.4 
(1) The fair value of securities collateral that was repledged or sold totaled $62.0 billion and $11.5 billion at December 31, 2023 and 2022, respectively. This primarily includes collateral accepted as related to the sponsored member program. Refer to Note 24, “Commitments and Contingent Liabilities” and Note 27, “Offsetting of Assets and Liabilities” for further information.

Restricted Assets. Certain cash may be restricted in terms of usage or withdrawal. As a result of the continuing military conflict involving Ukraine and the Russian Federation and related sanctions and legal restrictions in place, cash balances denominated in Russian rubles received for the benefit of certain clients in our Asset Servicing business are subject to distribution restrictions. As of December 31, 2023 and 2022, these balances totaled $722.2 million and $330.4 million, respectively, and are reported in Cash and Due from Banks on the consolidated balance sheet.
At December 31, 2023 and 2022, Northern Trust held cash of $575.2 million and $574.2 million, respectively, to meet non-U.S. reserve requirements. As a result of the economic environment arising from the COVID-19 pandemic, the Federal Reserve reduced the U.S. reserve requirement to zero percent on March 26, 2020. There were no average deposits required to meet Federal Reserve Bank reserve requirements at December 31, 2023 and 2022.