Paial the requifomiontse

Requiremant b$.$ What factos infusce managamenfs judgment in its estimate of the amount of colloctible reccivables?

Cornays wrib$-$ofls of accounts roceivable wire rilion in $2019$ and misn in $2018.$

Accounts receivable disclosures

NOTE $1$: Accounting Policies

The allowance for doubefil accounts represents management's stimabe of the amount of probable credit

credt exposuse relatiod is iv cusbomers.

NOTE $18$

SUPPLEMENTAL FINANCIAL STATEMENT DATA

Consolidated Balanes Shaet $($millions$)$

Trado receivables

Albwarco for doubtul accounts

Rolundable income tanea

Cher restriblas

Aetounts receivable, net

Allowance for doubtful accounts $($millions$)$

Balance at beginning of year.

Addicens charged to experse

Doubthal acoounts chargad to resarve

Balanes at sind of year

$,1$