Consolidated Statement of Cash Flows (Parenthetical) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Statement of Cash Flows [Abstract]
Transfer from securities available for sale to securities held to maturity	[1]	$ 20,041
Transferred securities from available for sale to held to maturity		18,700
Net unrealized losses, related to securities transferred to held to maturity		$ 1,300

[1] During the first quarter of 2022, we transferred securities from available for sale to held to maturity in a non-cash transaction. The amount of $20.0 billion includes the fair value of the securities of $18.7 billion and net pretax unrealized losses of $1.3 billion included in AOCI. See Note 3 Investment Securities for more detailed information on the transfer.