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Other Real Estate Owned (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Real Estate Acquired Through Foreclosure [Roll Forward] |  |  |  |  |
Beginning balance | $ 27.5 | $ 14.9 | $ 14.4 | $ 10.1 |
OREO acquired through acquisition | 0.0 | 0.6 | 2.4 | 0.6 |
Additions | 0.7 | 3.2 | 14.0 | 10.6 |
Valuation adjustments | (0.2) | (0.1) | (0.7) | (0.1) |
Dispositions | (10.2) | (1.3) | (12.3) | (3.9) |
Ending balance | 17.8 | $ 17.3 | 17.8 | $ 17.3 |
Carrying values of foreclosed residential real estate properties | 2.7 |  | 2.7 |  | $ 2.0
Consumer mortgage loans collateralized by residential real estate property in the process of foreclosure | $ 0.6 |  | $ 0.6 |  | $ 0.4

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- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL49126937-111524 + Details
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- Definition Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5162-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4437-111522 + Details
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