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Consolidated Balance Sheet (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Held-to-maturity securities, Fair Value $ 55,657 [1] $ 41,812
Securities, pledged as collateral 987 557
Mortgage loans, carried at fair value $ 2,773 $ 6,623
Common stock, par value $ 0.01 $ 0.01
Common stock, share-authorized (actual number of shares) 4,000,000,000 4,000,000,000
Common stock, shares issued (actual number of shares) 2,125,725,742 2,125,725,742
Treasury stock, shares (actual number of shares) 639,959,317 642,223,571
Available-for-Sale Securities [Member]    
Securities, pledged as collateral [2] $ 987 $ 557
Trading Assets, Excluding Debt and Equity Securities [Member]    
Securities, pledged as collateral [2] $ 1,258 $ 1,193
[1] The weighted-average maturity of total held-to-maturity investment securities was 7.4 years at December 31, 2021, with a corresponding weighted-average yield of 1.45 percent. The weighted-average maturity of total available-for-sale investment securities was 5.5 years at December 31, 2021, with a corresponding weighted-average yield of 1.73 percent.
[2] Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.