Deposits	12 Months Ended
	Dec. 31, 2020
Banking and Thrift, Other Disclosures [Abstract]
Deposits	DepositsAs of December 31, 2020, we had $1.68 billion of time deposits outstanding, all of which were non-US time deposits. As of December 31, 2019, we had $35.15 billion of time deposits outstanding, of which $3.00 billion were wholesale CDs, $32.01 billion were derived from client deposits (payable on demand to such clients) and held in a time deposit established by us as the agent and $139 million were non-U.S. As of December 31, 2020 and 2019, all U.S. and non-U.S. time deposits were in amounts of $250,000 or more. As of December 31, 2020, all time deposits are scheduled to mature in 2021. Demand deposit overdrafts of $2.98 billion and $3.26 billion were included as loan balances at December 31, 2020 and 2019, respectively.