The document discusses the key components of impairment modeling required for estimating expected credit losses under IFRS 9. It explains that IFRS 9 uses a three stage model where 12-month expected losses are recognized initially and lifetime losses are recognized if credit risk increases significantly. It outlines the expectations for impairment modeling, including assessing credit risk increases, defining default, quantifying probability of default and loss given default, and estimating losses using probability-weighted and loss rate approaches.