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FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets - GBP (£)
£ in Millions
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks £ 10,746 £ 9,775 £ 6,283
Loans and advances to customers 498,843 494,988  
Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 10,752 9,777  
Loans and advances to customers 504,603 498,247  
Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 10,670 9,777  
Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 82 0  
Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 5,760 3,259  
Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 6 2  
Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 147,875 133,553  
Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 459 177  
Retail mortgages | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 294,806 289,198  
Retail mortgages | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 272,382 270,522  
Retail mortgages | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 4,076 2,067  
Retail mortgages | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 907 414  
Retail mortgages | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,071 975  
Retail mortgages | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 14,370 15,220  
Retail mortgages | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,024 568  
Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 350 206  
Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 67 39  
Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 25 13  
Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 130 46  
Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 452 264  
Retail mortgages | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 19,550 12,393  
Retail mortgages | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 19,456 12,304  
Retail mortgages | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 2  
Retail mortgages | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 0  
Retail mortgages | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Retail mortgages | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 84 87  
Retail mortgages | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3 1  
Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3 1  
Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - credit cards | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 15,109 18,198  
Retail - credit cards | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10,903 15,473  
Retail - credit cards | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2,740 1,911  
Retail - credit cards | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 617 137  
Retail - credit cards | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 509 292  
Retail - credit cards | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 340 385  
Retail - credit cards | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 766 469  
Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 132 128  
Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 204 103  
Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 84 22  
Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 193 91  
Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 153 125  
Retail - credit cards | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 59,998 56,584  
Retail - credit cards | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 57,738 55,978  
Retail - credit cards | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,235 455  
Retail - credit cards | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 884 31  
Retail - credit cards | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 85 45  
Retail - credit cards | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 56 75  
Retail - credit cards | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 157 77  
Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 113 65  
Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 19 7  
Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 18 1  
Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 4  
Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - loans and overdrafts | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 9,536 10,212  
Retail - loans and overdrafts | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 5,850 7,774  
Retail - loans and overdrafts | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2,570 1,684  
Retail - loans and overdrafts | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 297 129  
Retail - loans and overdrafts | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 512 332  
Retail - loans and overdrafts | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 307 293  
Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 643 426  
Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 95 101  
Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 165 93  
Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 49 19  
Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 187 105  
Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 147 108  
Retail - loans and overdrafts | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 6,931 6,863  
Retail - loans and overdrafts | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 6,385 6,661  
Retail - loans and overdrafts | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 408 152  
Retail - loans and overdrafts | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 48 13  
Retail - loans and overdrafts | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 72 29  
Retail - loans and overdrafts | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 18 8  
Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 72 35  
Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 21 15  
Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 22 7  
Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 8 2  
Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 21 11  
Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - UK Motor Finance | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 15,201 15,976  
Retail - UK Motor Finance | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13,431 14,865  
Retail - UK Motor Finance | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,194 682  
Retail - UK Motor Finance | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 171 99  
Retail - UK Motor Finance | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 206 180  
Retail - UK Motor Finance | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 199 150  
Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 498 385  
Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 233 233  
Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 40 25  
Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 30 10  
Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 62 33  
Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 133 84  
Retail - UK Motor Finance | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,660 1,378  
Retail - UK Motor Finance | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,275 1,181  
Retail - UK Motor Finance | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 384 197  
Retail - UK Motor Finance | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - UK Motor Finance | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Retail - UK Motor Finance | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3 2  
Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 2  
Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 19,367 10,899  
Retail - other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 15,434 10,157  
Retail - other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2,752 428  
Retail - other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 21 7  
Retail - other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 976 157  
Retail - other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 184 150  
Retail - other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 188 113  
Retail - other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 38 35  
Retail - other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 50 26  
Retail - other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Retail - other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 40 1  
Retail - other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 59 51  
Retail - other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,882 1,305  
Retail - other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,695 1,240  
Retail - other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 176 62  
Retail - other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10 0  
Retail - other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 3  
Retail - other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 41 14  
Retail - other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 12 11  
Retail - other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 22 3  
Retail - other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Retail - other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 0  
Retail - other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Total Retail | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 354,019 344,483  
Total Retail | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,119 1,961  
Total Retail | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 90,021 78,523  
Total Retail | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 276 129  
Commercial | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 88,398 96,498  
Commercial | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 35,263 60,087  
Commercial | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 37,792 27,887  
Commercial | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 11,134 4,908  
Commercial | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 685 169  
Commercial | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,524 3,447  
Commercial | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 6 2  
Loans and advances to customers 2,214 1,265  
Commercial | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 44 34  
Commercial | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 250 87  
Commercial | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 494 187  
Commercial | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 144 16  
Commercial | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,282 941  
Commercial | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 57,141 54,400  
Commercial | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 42,071 47,783  
Commercial | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 12,534 5,984  
Commercial | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2,249 585  
Commercial | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 92 43  
Commercial | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 195 5  
Commercial | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 181 48  
Commercial | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 32 11  
Commercial | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 59 16  
Commercial | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 65 14  
Commercial | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 12 2  
Commercial | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 5  
Other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 62,186 57,266  
Other | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 60,985 56,356  
Other | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 238 0  
Other | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 0  
Other | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10 0  
Other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 884 786  
Other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 40  
Other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 67 84  
Other | Drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 951 910  
Other | Drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 61,235 56,356  
Other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 427 33  
Other | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 10  
Other | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10 7  
Other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 17 16  
Other | Expected credit losses in respect of drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 27 23  
Other | Expected credit losses in respect of drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 10  
Other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 713 630  
Other | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 239 391  
Other | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 170 0  
Other | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 5 0  
Other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 299 239  
Other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Undrawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 299 239  
Other | Undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 414 391  
Other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 0  
Other | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 0  
Other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Other | Expected credit losses in respect of undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Central overlay | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0    
Central overlay | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 400    
Stage 1 | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 10,752 9,777  
Loans and advances to customers 433,943 449,975  
Stage 1 | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 10,670 9,777  
Stage 1 | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 82 0  
Stage 1 | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 1 | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 1 | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 1 | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,372 675  
Stage 1 | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 6 2  
Stage 1 | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 1 | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 1 | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 1 | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 1 | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 139,075 129,634  
Stage 1 | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 212 95  
Stage 1 | Retail mortgages | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 251,418 257,043  
Stage 1 | Retail mortgages | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 251,372 257,028  
Stage 1 | Retail mortgages | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 46 15  
Stage 1 | Retail mortgages | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 104 23  
Stage 1 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 103 23  
Stage 1 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Stage 1 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 19,348 12,243  
Stage 1 | Retail mortgages | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 19,347 12,242  
Stage 1 | Retail mortgages | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 1  
Stage 1 | Retail mortgages | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3 1  
Stage 1 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3 1  
Stage 1 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - credit cards | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 11,496 16,132  
Stage 1 | Retail - credit cards | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 9,619 14,744  
Stage 1 | Retail - credit cards | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,603 1,355  
Stage 1 | Retail - credit cards | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 274 32  
Stage 1 | Retail - credit cards | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 1  
Stage 1 | Retail - credit cards | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - credit cards | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 155 155  
Stage 1 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 75 103  
Stage 1 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 66 49  
Stage 1 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 14 3  
Stage 1 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - credit cards | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 56,068 54,513  
Stage 1 | Retail - credit cards | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 54,694 54,216  
Stage 1 | Retail - credit cards | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 772 293  
Stage 1 | Retail - credit cards | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 602 3  
Stage 1 | Retail - credit cards | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 1  
Stage 1 | Retail - credit cards | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - credit cards | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 85 48  
Stage 1 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 67 44  
Stage 1 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 11 4  
Stage 1 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 0  
Stage 1 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - loans and overdrafts | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7,710 8,788  
Stage 1 | Retail - loans and overdrafts | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 5,559 7,406  
Stage 1 | Retail - loans and overdrafts | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,990 1,321  
Stage 1 | Retail - loans and overdrafts | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 116 44  
Stage 1 | Retail - loans and overdrafts | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 45 17  
Stage 1 | Retail - loans and overdrafts | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 201 146  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 80 84  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 99 55  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 4  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 9 3  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - loans and overdrafts | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 6,355 6,535  
Stage 1 | Retail - loans and overdrafts | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 6,070 6,437  
Stage 1 | Retail - loans and overdrafts | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 269 96  
Stage 1 | Retail - loans and overdrafts | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 2  
Stage 1 | Retail - loans and overdrafts | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3 0  
Stage 1 | Retail - loans and overdrafts | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 23 14  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 14 12  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 8 2  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - UK Motor Finance | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 12,786 13,884  
Stage 1 | Retail - UK Motor Finance | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 12,035 13,568  
Stage 1 | Retail - UK Motor Finance | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 738 314  
Stage 1 | Retail - UK Motor Finance | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - UK Motor Finance | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 2  
Stage 1 | Retail - UK Motor Finance | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 194 214  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 187 203  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 10  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 1  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - UK Motor Finance | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,657 1,374  
Stage 1 | Retail - UK Motor Finance | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,275 1,181  
Stage 1 | Retail - UK Motor Finance | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 381 193  
Stage 1 | Retail - UK Motor Finance | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - UK Motor Finance | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Stage 1 | Retail - UK Motor Finance | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3 2  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 2  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 17,879 9,904  
Stage 1 | Retail - other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 14,952 9,762  
Stage 1 | Retail - other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2,418 8  
Stage 1 | Retail - other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 509 134  
Stage 1 | Retail - other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 30 25  
Stage 1 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 19 25  
Stage 1 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 11 0  
Stage 1 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,812 1,240  
Stage 1 | Retail - other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,672 1,240  
Stage 1 | Retail - other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 140 0  
Stage 1 | Retail - other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 16 11  
Stage 1 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 11  
Stage 1 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 9 0  
Stage 1 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Total Retail | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 301,289 305,751  
Stage 1 | Total Retail | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 684 563  
Stage 1 | Total Retail | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 85,240 75,905  
Stage 1 | Total Retail | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 130 76  
Stage 1 | Commercial | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 70,558 87,074  
Stage 1 | Commercial | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 35,072 59,708  
Stage 1 | Commercial | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 30,821 25,569  
Stage 1 | Commercial | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 4,665 1,797  
Stage 1 | Commercial | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Commercial | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Commercial | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 6 2  
Loans and advances to customers 279 96  
Stage 1 | Commercial | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 42 33  
Stage 1 | Commercial | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 141 50  
Stage 1 | Commercial | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 96 13  
Stage 1 | Commercial | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Commercial | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Commercial | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 53,127 53,099  
Stage 1 | Commercial | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 42,071 47,707  
Stage 1 | Commercial | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10,122 5,134  
Stage 1 | Commercial | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 934 258  
Stage 1 | Commercial | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Commercial | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Commercial | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 80 19  
Stage 1 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 32 11  
Stage 1 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 32 7  
Stage 1 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 16 1  
Stage 1 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 62,096 57,150  
Stage 1 | Other | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 60,985 56,356  
Stage 1 | Other | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 238 0  
Stage 1 | Other | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 0  
Stage 1 | Other | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 871 754  
Stage 1 | Other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 40  
Stage 1 | Other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 871 794  
Stage 1 | Other | Drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 61,225 56,356  
Stage 1 | Other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 409 16  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 10  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 9 6  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 9 6  
Stage 1 | Other | Expected credit losses in respect of drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 10  
Stage 1 | Other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 708 630  
Stage 1 | Other | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 239 391  
Stage 1 | Other | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 170 0  
Stage 1 | Other | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 299 239  
Stage 1 | Other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Undrawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 299 239  
Stage 1 | Other | Undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 409 391  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Other | Expected credit losses in respect of undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 1 | Central overlay | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0    
Stage 1 | Central overlay | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 400    
Stage 2 | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Loans and advances to customers 51,659 28,543  
Stage 2 | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2,145 995  
Stage 2 | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 2 | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 8,441 3,741  
Stage 2 | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 234 77  
Stage 2 | Retail mortgages | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 29,018 16,935  
Stage 2 | Retail mortgages | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 21,010 13,494  
Stage 2 | Retail mortgages | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 4,030 2,052  
Stage 2 | Retail mortgages | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 907 414  
Stage 2 | Retail mortgages | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,071 975  
Stage 2 | Retail mortgages | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail mortgages | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 468 281  
Stage 2 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 247 183  
Stage 2 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 66 39  
Stage 2 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 25 13  
Stage 2 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 130 46  
Stage 2 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail mortgages | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 118 63  
Stage 2 | Retail mortgages | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 109 62  
Stage 2 | Retail mortgages | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 6 1  
Stage 2 | Retail mortgages | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 0  
Stage 2 | Retail mortgages | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Stage 2 | Retail mortgages | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail mortgages | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - credit cards | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,273 1,681  
Stage 2 | Retail - credit cards | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,284 729  
Stage 2 | Retail - credit cards | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,137 556  
Stage 2 | Retail - credit cards | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 343 105  
Stage 2 | Retail - credit cards | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 509 291  
Stage 2 | Retail - credit cards | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - credit cards | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 458 189  
Stage 2 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 57 25  
Stage 2 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 138 54  
Stage 2 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 70 19  
Stage 2 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 193 91  
Stage 2 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - credit cards | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,874 1,996  
Stage 2 | Retail - credit cards | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,044 1,762  
Stage 2 | Retail - credit cards | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 463 162  
Stage 2 | Retail - credit cards | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 282 28  
Stage 2 | Retail - credit cards | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 85 44  
Stage 2 | Retail - credit cards | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - credit cards | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 72 29  
Stage 2 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 46 21  
Stage 2 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 8 3  
Stage 2 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 11 1  
Stage 2 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 4  
Stage 2 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - loans and overdrafts | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,519 1,131  
Stage 2 | Retail - loans and overdrafts | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 291 368  
Stage 2 | Retail - loans and overdrafts | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 580 363  
Stage 2 | Retail - loans and overdrafts | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 181 85  
Stage 2 | Retail - loans and overdrafts | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 467 315  
Stage 2 | Retail - loans and overdrafts | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 295 172  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 15 17  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 66 38  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 36 15  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 178 102  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - loans and overdrafts | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 558 320  
Stage 2 | Retail - loans and overdrafts | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 315 224  
Stage 2 | Retail - loans and overdrafts | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 139 56  
Stage 2 | Retail - loans and overdrafts | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 35 11  
Stage 2 | Retail - loans and overdrafts | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 69 29  
Stage 2 | Retail - loans and overdrafts | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 49 21  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 3  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 14 5  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 2  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 21 11  
Stage 2 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2,216 1,942  
Stage 2 | Retail - UK Motor Finance | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,396 1,297  
Stage 2 | Retail - UK Motor Finance | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 456 368  
Stage 2 | Retail - UK Motor Finance | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 171 99  
Stage 2 | Retail - UK Motor Finance | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 193 178  
Stage 2 | Retail - UK Motor Finance | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 171 87  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 46 30  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 33 15  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 30 10  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 62 32  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3 4  
Stage 2 | Retail - UK Motor Finance | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3 4  
Stage 2 | Retail - UK Motor Finance | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,304 845  
Stage 2 | Retail - other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 482 395  
Stage 2 | Retail - other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 334 420  
Stage 2 | Retail - other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 21 7  
Stage 2 | Retail - other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 467 23  
Stage 2 | Retail - other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 99 37  
Stage 2 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 19 10  
Stage 2 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 39 26  
Stage 2 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 0  
Stage 2 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 40 1  
Stage 2 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 69 62  
Stage 2 | Retail - other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 23 0  
Stage 2 | Retail - other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 36 62  
Stage 2 | Retail - other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10 0  
Stage 2 | Retail - other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 25 3  
Stage 2 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 5 0  
Stage 2 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 3  
Stage 2 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 7 0  
Stage 2 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Total Retail | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 37,330 22,534  
Stage 2 | Total Retail | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,491 766  
Stage 2 | Total Retail | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 4,622 2,445  
Stage 2 | Total Retail | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 146 53  
Stage 2 | Commercial | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 14,316 5,977  
Stage 2 | Commercial | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 191 379  
Stage 2 | Commercial | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 6,971 2,318  
Stage 2 | Commercial | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 6,469 3,111  
Stage 2 | Commercial | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 685 169  
Stage 2 | Commercial | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Commercial | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Loans and advances to customers 653 228  
Stage 2 | Commercial | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2 1  
Stage 2 | Commercial | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 109 37  
Stage 2 | Commercial | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 398 174  
Stage 2 | Commercial | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 144 16  
Stage 2 | Commercial | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Commercial | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,819 1,296  
Stage 2 | Commercial | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 76  
Stage 2 | Commercial | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2,412 850  
Stage 2 | Commercial | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,315 327  
Stage 2 | Commercial | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 92 43  
Stage 2 | Commercial | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Commercial | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 88 24  
Stage 2 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 27 9  
Stage 2 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 49 13  
Stage 2 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 12 2  
Stage 2 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 32  
Stage 2 | Other | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 32  
Stage 2 | Other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 32  
Stage 2 | Other | Drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 1  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 1  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 1  
Stage 2 | Other | Expected credit losses in respect of drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Other | Expected credit losses in respect of undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 2 | Central overlay | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0    
Stage 2 | Central overlay | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0    
Stage 3 | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Loans and advances to customers 6,490 6,015  
Stage 3 | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,982 1,447  
Stage 3 | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Stage 3 | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 285 99  
Stage 3 | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 5  
Stage 3 | Retail mortgages | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,859 1,506  
Stage 3 | Retail mortgages | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,859 1,506  
Stage 3 | Retail mortgages | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 191 122  
Stage 3 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 191 122  
Stage 3 | Retail mortgages | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10 8  
Stage 3 | Retail mortgages | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10 8  
Stage 3 | Retail mortgages | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 340 385  
Stage 3 | Retail - credit cards | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 340 385  
Stage 3 | Retail - credit cards | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 153 125  
Stage 3 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 153 125  
Stage 3 | Retail - credit cards | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 56 75  
Stage 3 | Retail - credit cards | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 56 75  
Stage 3 | Retail - credit cards | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 307 293  
Stage 3 | Retail - loans and overdrafts | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 307 293  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 147 108  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 147 108  
Stage 3 | Retail - loans and overdrafts | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 18 8  
Stage 3 | Retail - loans and overdrafts | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 18 8  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 199 150  
Stage 3 | Retail - UK Motor Finance | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 199 150  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 133 84  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 133 84  
Stage 3 | Retail - UK Motor Finance | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 184 150  
Stage 3 | Retail - other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 184 150  
Stage 3 | Retail - other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 59 51  
Stage 3 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 59 51  
Stage 3 | Retail - other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 3  
Stage 3 | Retail - other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1 3  
Stage 3 | Retail - other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Total Retail | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 2,889 2,484  
Stage 3 | Total Retail | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 683 490  
Stage 3 | Total Retail | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 85 94  
Stage 3 | Total Retail | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,524 3,447  
Stage 3 | Commercial | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 3,524 3,447  
Stage 3 | Commercial | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Loans and advances to customers 1,282 941  
Stage 3 | Commercial | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 1,282 941  
Stage 3 | Commercial | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 195 5  
Stage 3 | Commercial | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 195 5  
Stage 3 | Commercial | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 5  
Stage 3 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Commercial | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 13 5  
Stage 3 | Other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 77 84  
Stage 3 | Other | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10 0  
Stage 3 | Other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 67 84  
Stage 3 | Other | Drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 67 84  
Stage 3 | Other | Drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 10 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 17 16  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 17 16  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 17 16  
Stage 3 | Other | Expected credit losses in respect of drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 5 0  
Stage 3 | Other | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 5 0  
Stage 3 | Other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 5 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Other | Expected credit losses in respect of undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
Stage 3 | Central overlay | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0    
Stage 3 | Central overlay | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0    
POCI | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Loans and advances to customers 12,511 13,714  
POCI | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 261 142  
POCI | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
POCI | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 74 79  
POCI | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 12,511 13,714  
POCI | Retail mortgages | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 12,511 13,714  
POCI | Retail mortgages | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 261 142  
POCI | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 261 142  
POCI | Retail mortgages | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 74 79  
POCI | Retail mortgages | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 74 79  
POCI | Retail mortgages | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail mortgages | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - credit cards | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - loans and overdrafts | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - UK Motor Finance | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Retail - other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Total Retail | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 12,511 13,714  
POCI | Total Retail | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 261 142  
POCI | Total Retail | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 74 79  
POCI | Total Retail | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to banks 0 0  
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Commercial | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of drawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | RMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | CMS 1-10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | CMS 11-14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | CMS 15-18      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | CMS 19      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | CMS 20-23      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | RMS 1-6      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | RMS 7-9      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | RMS 10      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | RMS 11-13      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | RMS 14      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 0  
POCI | Other | Expected credit losses in respect of undrawn exposures | CMS      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0 £ 0  
POCI | Central overlay | Drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers 0    
POCI | Central overlay | Expected credit losses in respect of drawn exposures      
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Credit Quality of Assets [Line Items]      
Loans and advances to customers £ 0