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Business Segments and Revenue from Contracts with Customers - Revenue from Contracts with Customers (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | $ 1,415 | $ 1,251 | $ 4,055 | $ 3,493
Revenue (reduction) from other sources | 387 | 423 | 1,238 | 1,103
Non-interest income (loss) | 1,802 | 1,674 | 5,293 | 4,596
Operating segments | Credit Card |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 1,189 | 1,028 | 3,412 | 2,860
Revenue (reduction) from other sources | 265 | 235 | 910 | 685
Non-interest income (loss) | 1,454 | 1,263 | 4,322 | 3,545
Operating segments | Consumer Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 124 | 127 | 360 | 378
Revenue (reduction) from other sources | 5 | 0 | (30) | 34
Non-interest income (loss) | 129 | 127 | 330 | 412
Operating segments | Commercial Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 102 | 96 | 283 | 255
Revenue (reduction) from other sources | 217 | 210 | 585 | 548
Non-interest income (loss) | 319 | 306 | 868 | 803
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 0 | 0 | 0 | 0
Revenue (reduction) from other sources | (100) | (22) | (227) | (164)
Non-interest income (loss) | (100) | (22) | (227) | (164)
Interchange fees, net |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 1,195 | 1,022 | 3,429 | 2,855
Interchange fees, net | Operating segments | Credit Card |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 1,085 | 930 | 3,115 | 2,598
Interchange fees, net | Operating segments | Consumer Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 83 | 68 | 234 | 192
Interchange fees, net | Operating segments | Commercial Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 27 | 24 | 79 | 65
Interchange fees, net | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 0 | 0 | 1 | 0
Service charges and other customer-related fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 85 | 113 | 259 | 318
Service charges and other customer-related fees | Operating segments | Credit Card |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 0 | 0 | 0 | 0
Service charges and other customer-related fees | Operating segments | Consumer Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 23 | 42 | 70 | 131
Service charges and other customer-related fees | Operating segments | Commercial Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 62 | 71 | 190 | 187
Service charges and other customer-related fees | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 0 | 0 | (1) | 0
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 135 | 116 | 367 | 320
Other | Operating segments | Credit Card |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 104 | 98 | 297 | 262
Other | Operating segments | Consumer Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 18 | 17 | 56 | 55
Other | Operating segments | Commercial Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | 13 | 1 | 14 | 3
Other | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contract revenue | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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