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Allowance For Credit Losses (Tables)
3 Months Ended
Mar. 31, 2020
Allowance for Credit Loss [Abstract]  
Summary, by Loan Portfolio Segment, of Activity in Allowance for Loan Losses
The following tables present a summary, by loan portfolio segment, of activity in the ACL for the three months ended March 31, 2020 and 2019:
Three months ended 
March 31, 2020 (in millions)CommercialRetailTotal
Balance at beginning of period,
prior to adoption of CECL
$217.9  $28.7  $246.6  
CECL transition adjustment(17.3) 89.5  72.2  
Charge-offs(9.7) (2.9) (12.6) 
Recoveries1.4  0.6  2.0  
Net loan charge-offs(8.3) (2.3) (10.6) 
Provision for credit losses19.5  14.0  33.5  
Balance at end of period$211.8  $129.9  $341.7  
Three months ended 
March 31, 2019 (in millions)CommercialRetailTotal
Balance at beginning of period$209.5  $30.9  $240.4  
Charge-offs(6.4) (1.1) (7.5) 
Recoveries1.4  1.0  2.4  
Net loan charge-offs(5.0) (0.1) (5.1) 
Provision for credit losses4.5  1.1  5.6  
Balance at end of period$209.0  $31.9  $240.9  
The following table summarizes the changes in the ACL on off-balance sheet credit exposures:
(in millions)Three Months Ended March 31, 2020
Balance at beginning of the period$5.6  
CECL transition adjustment14.5
Balance at beginning of period, adjusted20.1
Provision charged (credited) to income0.6
Balance at end of period$20.7