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EQUITY (Details - Preferred Stock) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 30, 2021
Dec. 15, 2021
Sep. 30, 2021
Sep. 15, 2021
Jun. 29, 2021
Jun. 15, 2021
Mar. 30, 2021
Mar. 15, 2021
Dec. 28, 2020
Dec. 15, 2020
Sep. 30, 2020
Sep. 15, 2020
Jun. 29, 2020
Jun. 15, 2020
Mar. 30, 2020
Mar. 16, 2020
Dec. 26, 2019
Dec. 16, 2019
Sep. 30, 2019
Sep. 16, 2019
Jun. 28, 2019
Jun. 17, 2019
Mar. 29, 2019
Mar. 14, 2019
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Class of Stock [Line Items]                                                      
Issuances (in shares)                                                 6,853,070 3,719,970 3,389,602
Preferred stock, par value (in dollars per share)                                                 $ 5.00 $ 5  
Preferred stock liquidation preference                                                 $ 500 $ 500  
Issuance of preferred stock                                                 $ 0 $ 0 $ 485
Date dividends declared Nov. 04, 2021   Aug. 05, 2021   May 06, 2021   Feb. 16, 2021   Nov. 05, 2020   Aug. 03, 2020   May 04, 2020   Feb. 12, 2020   Oct. 31, 2019   Aug. 07, 2019   May 06, 2019   Feb. 13, 2019        
Date of record Dec. 16, 2021   Sep. 16, 2021   Jun. 15, 2021   Mar. 16, 2021   Dec. 14, 2020   Sep. 17, 2020   Jun. 15, 2020   Mar. 16, 2020   Dec. 12, 2019   Sep. 17, 2019   Jun. 14, 2019   Mar. 15, 2019        
Date dividends paid Dec. 30, 2021   Sep. 30, 2021   Jun. 29, 2021   Mar. 30, 2021   Dec. 28, 2020   Sep. 30, 2020   Jun. 29, 2020   Mar. 30, 2020   Dec. 26, 2019   Sep. 30, 2019   Jun. 28, 2019   Mar. 29, 2019        
Series A Preferred Stock                                                      
Class of Stock [Line Items]                                                      
Issuances (in shares)                                               20,000      
Preferred stock, dividend rate (as a percent)                                               5.85% 5.85%    
Preferred stock, par value (in dollars per share)                                               $ 5.00      
Preferred stock liquidation preference                                               $ 25,000      
Issuance of preferred stock                                               $ 485      
Date dividends declared   Nov. 04, 2021   Aug. 05, 2021   May 06, 2021   Feb. 16, 2021   Nov. 05, 2020   Aug. 03, 2020   May 04, 2020   Feb. 12, 2020   Oct. 31, 2019   Aug. 07, 2019   May 21, 2019          
Date of record   Nov. 30, 2021   Aug. 31, 2021   May 31, 2021   Feb. 26, 2021   Nov. 30, 2020   Aug. 31, 2020   May 29, 2020   Feb. 28, 2020   Nov. 29, 2019   Aug. 30, 2019   May 31, 2019          
Date dividends paid   Dec. 15, 2021   Sep. 15, 2021   Jun. 15, 2021   Mar. 15, 2021   Dec. 15, 2020   Sep. 15, 2020   Jun. 15, 2020   Mar. 16, 2020   Dec. 16, 2019   Sep. 16, 2019   Jun. 17, 2019          
Preferred Stock Dividends Per Share Cash Paid   $ 365.625   $ 365.625   $ 365.625   $ 365.625   $ 365.625   $ 365.625   $ 365.625   $ 365.625   $ 365.625   $ 365.625   $ 369.6875          
Series A Preferred Stock | Rating Agency Event [Member]                                                      
Class of Stock [Line Items]                                                      
Preferred stock redemption terms                                                 P90D    
Preferred stock redemption price per share                                               $ 25,500      
Series A Preferred Stock | Regulatory Capital Event [Member]                                                      
Class of Stock [Line Items]                                                      
Preferred stock redemption price per share                                               $ 25,000      
Series A Depositary Shares                                                      
Class of Stock [Line Items]                                                      
Preferred Stock Dividends Per Share Cash Paid   $ 0.365625   $ 0.365625   $ 0.365625   $ 0.365625   $ 0.365625   $ 0.365625   $ 0.365625   $ 0.365625   $ 0.365625   $ 0.365625   $ 0.3696875