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Accounting changes and new accounting guidance (Tables)
3 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]  
Reconciliation of Allowance for Credit Losses
The table below presents the reconciliation of the allowance for credit losses (pre-tax).

Allowance for credit losses
 
(in millions)
 
Allowance for credit losses – Dec. 31, 2019
$
216

Impact of adopting ASU 2016-13:
 
Securities
7

Loans (a)
(69
)
Other
3

Total impact of adoption of ASU 2016-13
(59
)
Reclassification of credit-related reserves on accounts receivable
4

Allowance for credit losses – Jan. 1, 2020
$
161

(a)
Includes $48 million related to loans and $21 million for lending-related commitments.