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Business Combinations and Discontinued Operations - Schedule of Finite-Lived Intangible Assets (Details) - Discover $ in Millions | May 18, 2025 USD ($)
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Business Combination [Line Items] |
Intangible assets with definite lives | $ 12,840
Intangible assets with indefinite lives | 5,370
Total | $ 18,210
Acquired finite-lived intangible assets, weighted average useful life | 11 years
Discover Network |
Business Combination [Line Items] |
Intangible assets with indefinite lives | $ 3,100
Brand/Trade names |
Business Combination [Line Items] |
Intangible assets with indefinite lives | $ 2,270
Purchased credit card relationships |
Business Combination [Line Items] |
Useful Life | 11 months
Intangible assets with definite lives | $ 10,300
Network and financial partner relationships |
Business Combination [Line Items] |
Useful Life | 11 months
Intangible assets with definite lives | $ 1,500
Core deposit |
Business Combination [Line Items] |
Useful Life | 10 months
Intangible assets with definite lives | $ 1,040

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