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Provision for credit losses (Tables)
12 Months Ended
Dec. 31, 2018
Provision for credit losses
in 2018 2017 2016
Provision for credit losses (CHF million)    
Provision for loan losses 201 190 249
Provision for lending-related and other exposures 44 20 3
Provision for credit losses   245 210 252
Bank  
Provision for credit losses
in 2018 2017 2016
Provision for credit losses (CHF million)    
Provision for loan losses 201 190 249
Provision for lending-related and other exposures 44 20 3
Provision for credit losses   245 210 252