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Loans to Customers at Amortized Cost (Details) - Schedule of credit quality and the maximum exposure to credit risk - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Normal [Member] |  |
Commercial loans |  |
Commercial loans | $ 16,878,530 | $ 15,800,666
Mortgage loans |  |
Mortgage loans | 9,067,836 | 9,031,624
Consumer loans |  |
Consumer loans | 3,622,389 | 4,241,342
Normal [Member] | POCI [Member] |  |
Commercial loans |  |
Commercial loans | 42 |
Consumer loans |  |
Consumer loans | 28 |
Normal [Member] | Stage 1 - Individual [Member] | Stage 1 [Member] |  |
Commercial loans |  |
Commercial loans | 8,918,334 | 9,880,799
Normal [Member] | Stage 1 - Group [Member] | Stage 1 [Member] |  |
Commercial loans |  |
Commercial loans | 4,291,198 | 3,369,494
Mortgage loans |  |
Mortgage loans | 8,664,761 | 8,209,100
Consumer loans |  |
Consumer loans | 3,295,502 | 3,860,973
Normal [Member] | Stage 2 - Individual [Member] | Stage 2 [Member] |  |
Commercial loans |  |
Commercial loans | 3,467,569 | 1,987,763
Normal [Member] | Stage 2 - Group [Member] | Stage 2 [Member] |  |
Commercial loans |  |
Commercial loans | 199,810 | 561,831
Mortgage loans |  |
Mortgage loans | 401,997 | 822,524
Consumer loans |  |
Consumer loans | 324,440 | 372,814
Normal [Member] | Stage 3 - Group [Member] | Stage 3 [Member] |  |
Commercial loans |  |
Commercial loans | 613 | 779
Mortgage loans |  |
Mortgage loans | 1,078 |
Consumer loans |  |
Consumer loans | 2,419 | 7,555
Normal [Member] | Stage 3 - Individual [Member] | Stage 3 [Member] |  |
Commercial loans |  |
Commercial loans | 964 |
Substandard [Member] |  |
Commercial loans |  |
Commercial loans | 195,869 | 71,718
Substandard [Member] | POCI [Member] |  |
Commercial loans |  |
Commercial loans | 1,627 |
Substandard [Member] | Stage 2 - Individual [Member] | Stage 2 [Member] |  |
Commercial loans |  |
Commercial loans | 194,242 | 71,718
Non-complying [Member] |  |
Commercial loans |  |
Commercial loans | 527,198 | 421,828
Mortgage loans |  |
Mortgage loans | 319,536 | 175,103
Consumer loans |  |
Consumer loans | 326,332 | 290,991
Total | 30,937,690 | 30,033,272
Non-complying [Member] | POCI [Member] |  |
Commercial loans |  |
Commercial loans | 2,202 | 1,636
Mortgage loans |  |
Mortgage loans | 414 |
Consumer loans |  |
Consumer loans | 1,649 | 88
Total | 5,962 | 1,724
Non-complying [Member] | Stage 1 - Individual [Member] | Stage 1 [Member] |  |
Consumer loans |  |
Total | 8,918,334 | 9,880,799
Non-complying [Member] | Stage 1 - Group [Member] | Stage 1 [Member] |  |
Consumer loans |  |
Total | 16,251,461 | 15,439,567
Non-complying [Member] | Stage 2 - Individual [Member] | Stage 2 [Member] |  |
Consumer loans |  |
Total | 3,661,811 | 2,059,481
Non-complying [Member] | Stage 2 - Group [Member] | Stage 2 [Member] |  |
Consumer loans |  |
Total | 926,247 | 1,757,169
Non-complying [Member] | Stage 3 - Group [Member] | Stage 3 [Member] |  |
Commercial loans |  |
Commercial loans | 321,511 | 267,220
Mortgage loans |  |
Mortgage loans | 319,122 | 175,103
Consumer loans |  |
Consumer loans | 324,683 | 290,903
Total | 969,426 | 741,560
Non-complying [Member] | Stage 3 - Individual [Member] | Stage 3 [Member] |  |
Commercial loans |  |
Commercial loans | 203,485 | 152,972
Consumer loans |  |
Total | 204,449 | 152,972
Subtotal [Member] |  |
Commercial loans |  |
Commercial loans | 17,601,597 | 16,294,212
Mortgage loans |  |
Mortgage loans | 9,387,372 | 9,206,727
Consumer loans |  |
Consumer loans | 3,948,721 | 4,532,333
Subtotal [Member] | POCI [Member] |  |
Commercial loans |  |
Commercial loans | 3,871 | 1,636
Mortgage loans |  |
Mortgage loans | 414 |
Consumer loans |  |
Consumer loans | 1,677 | 88
Subtotal [Member] | Stage 1 - Individual [Member] | Stage 1 [Member] |  |
Commercial loans |  |
Commercial loans | 8,918,334 | 9,880,799
Subtotal [Member] | Stage 1 - Group [Member] | Stage 1 [Member] |  |
Commercial loans |  |
Commercial loans | 4,291,198 | 3,369,494
Mortgage loans |  |
Mortgage loans | 8,664,761 | 8,209,100
Consumer loans |  |
Consumer loans | 3,295,502 | 3,860,973
Subtotal [Member] | Stage 2 - Individual [Member] | Stage 2 [Member] |  |
Commercial loans |  |
Commercial loans | 3,661,811 | 2,059,481
Subtotal [Member] | Stage 2 - Group [Member] | Stage 2 [Member] |  |
Commercial loans |  |
Commercial loans | 199,810 | 561,831
Mortgage loans |  |
Mortgage loans | 401,997 | 822,524
Consumer loans |  |
Consumer loans | 324,440 | 372,814
Subtotal [Member] | Stage 3 - Group [Member] | Stage 3 [Member] |  |
Commercial loans |  |
Commercial loans | 322,124 | 267,999
Mortgage loans |  |
Mortgage loans | 320,200 | 175,103
Consumer loans |  |
Consumer loans | 327,102 | 298,458
Subtotal [Member] | Stage 3 - Individual [Member] | Stage 3 [Member] |  |
Commercial loans |  |
Commercial loans | $ 204,449 | $ 152,972

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