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Weighted Average FICO Scores & weighted Average Combined LTV Ratios (Details) - score | Dec. 31, 2017 | Dec. 31, 2016
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Residential Portfolio Segment [Member] |  |  |
Weighted average FICO scores and the weighted average combined LTV Ratio |  |  |
FICO score (re-scored) | [1] | 745 | 743
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio |  | 59.20% | 63.20%
Home Equity [Member] |  |  |
Weighted average FICO scores and the weighted average combined LTV Ratio |  |  |
FICO score (re-scored) |  | 766 | 767
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio |  | 50.10% | 55.90%
[1] | The average FICO scores at December 31, 2017 are based upon rescores available from August 2017 and origination score data for loans booked between September and December 2017. The average FICO scores at December 31, 2016 are based upon rescores available from November 2016 and origination score data for loans booked in December 2016.

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