Mortgage Servicing Rights - Additional Information (Details) $ in Millions |
12 Months Ended |
|---|---|
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Dec. 31, 2016
USD ($)
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| Transfers and Servicing [Abstract] | |
| Change in fair value resulting from change in valuation inputs | $ 306 |
| X | ||||||||||
- Definition Servicing Asset At Fair Value, Change in Fair Value Resulting from Change in Valuation Inputs No definition available.
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| X | ||||||||||
- References No definition available.
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