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Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Total allowance |  | $ 5,928.0 | $ 2,742.0
Common stock, par value (in dollars per share) |  | $ 5 | $ 5
Common stock, authorized (shares) |  | 800,000,000 | 800,000,000
Common stock, issued (shares) |  | 542,000,000 | 542,000,000
Common stock held in treasury at cost (shares) |  | 117,000,000 | 109,000,000
Preferred stock (less than) | [1] |  |
Preferred stock (less than) |  | 0.5 | $ 0.5
Portion at Fair Value, Fair Value Disclosure |  |  |
Loans held for sale, fair value |  | 1,200.0 | 1,100.0
Loans, fair value |  | 1,000.0 | 700.0
Other assets, fair value |  | 100.0 | 100.0
Other borrowed funds, fair value |  | $ 100.0 | 100.0
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 |  |  |
Total allowance |  |  | $ 463.0
[1] | Par value less than $.5 million at each date.

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