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INCOME TAXES - Total Income Tax Expense (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]                      
Statements of earnings $ 276 $ 259 $ 292 $ 314 $ 197 $ 301 $ 299 $ 265 $ 1,141 $ 1,063 $ (586)
Other comprehensive income (loss):                      
Unrealized foreign currency translation gains (losses) during period                 27 10 52
Unrealized gains (losses) on investment securities:                      
Unrealized holding gains (losses) on investment securities during period                 1,532 (787) 575
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings                 5 (12) 1
Unrealized gains (losses) on derivatives during period                 (3) 0 0
Pension liability adjustment during period                 (18) (8) 3
Total income tax expense (benefit) related to items of other comprehensive income (loss)                 1,543 (797) 631
Total income taxes                 $ 2,684 $ 266 $ 45