From the Ukrainian press. If the three figures mentioned below ($300 million, $450 million and $100 million), are separate, the total is $850 million in military assistance to Ukraine.

See: Senators sound Ukraine war drums, not peace chimes on Christmas Eve

Biden signs U.S. defense bill for 2022 with $300 million in aid to Ukraine
The document provides the allocation of $768.2 billion for US defense

Earlier, the US Senate registered the Guard/Guaranteeing Ukraine’s Autonomy by Reinforcing its Defense Act.

It proposes to provide Ukraine with $450 million for military needs, in addition to $100 million for such critical things as air defense and anti-ship missiles, coordinating the efforts of the State Department and the Ministry of Defense with the equipment and ammunition used by our armed forces.