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Derivative Instruments and Hedging Activities - Offsetting Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Derivative liabilities |  |
Derivative liabilities, gross amount | $ 1,197 | $ 1,201
Derivative liabilities, offsetting financial instruments | (347) | (205)
Derivative liabilities, offsetting cash collateral | (176) | (82)
Total derivative liabilities | 674 | 914
Derivative liabilities, securities collateral not netted | 0 | 0
Net exposure | 674 | 914
Repurchase agreements |  |
Gross amounts | 314 | 352
Repurchase agreements, securities sold, offset | 0 | 0
Repurchase agreements, cash collateral pledged, offset | 0 | 0
Net amounts as recognized | 314 | 352
Repurchase agreements, securities collateral not netted | (314) | (352)
Net exposure | 0 | 0
Derivative, collateral, obligation to return cash | 347 | 925
Derivative, collateral, obligation to return securities | 1 | 1
Derivative, collateral, right to reclaim cash | 954 | 633
Securities sold under repurchase agreements, fair value of collateral | $ 320 | $ 359

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