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Notes and Accounts Receivable, Net | 12 Months Ended
--- | ---
Dec. 31, 2018
Trade accounts and notes receivable [member] |
Statement [LineItems] |
Notes and Accounts Receivable, Net |
14. | NOTES AND ACCOUNTS RECEIVABLE, NET
|  | December 31, 2017 |  |  | December 31, 2018 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |  |  | (In Millions) |
At amortized cost |  |  |  |  |  |  |  |
Notes and accounts receivable |  | $ | 121,605.0 |  |  | $ | 125,025.6 |
Less: Loss allowance |  |  | (471.8 | ) |  |  | (7.3 | )
|  |  | 121,133.2 |  |  |  | 125,018.3 |
At FVTOCI |  |  | — |  |  |  | 3,595.1 |
|  | $ | 121,133.2 |  |  | $ | 128,613.4 |
The Company signed a contract with the bank to sell certain accounts receivable without recourse and transaction cost required. These accounts receivable are classified as at FVTOCI because they are held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets. 2017 In principle, the payment term granted to customers is due 30 days from the invoice date or 30 days from the end of the month of when the invoice is issued. The allowance for doubtful receivables is assessed by reference to the collectability of receivables by performing the account aging analysis, historical experience and current financial condition of customers. Except for those impaired, for the rest of the notes and accounts receivable, the account aging analysis at the end of the reporting period is summarized in the following table. There was no impairment concern for the accounts receivable that were past due without recognizing a specific allowance for doubtful receivables since there was no significant change in the credit quality of its customers after the assessment and the Company has obtained guarantee against certain receivables. Aging analysis of notes and accounts receivable, net
|  | December 31, 2017 |
|  | NT$ |
|  | (In Millions) |
Neither past due nor impaired |  | $ | 105,295.2 |
Past due but not impaired |  |  |  |
Past due within 30 days |  |  | 13,984.1 |
Past due 31-60 days |  |  | 929.7 |
Past due 61-120 days |  |  | 582.8 |
Past due over 121 days |  |  | 341.4 |
|  | $ | 121,133.2 |
Movements of the allowance for doubtful receivables
|  | Individually Assessed for Impairment |  |  | Collectively Assessed for Impairment |  |  | Total |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |  |  | (In Millions) |  |  | (In Millions) |
Balance at January 1, 2017 |  | $ | 1.8 |  |  | $ | 478.3 |  |  | $ | 480.1 |
Reversal/Write-off |  |  | (1.8 | ) |  |  | (6.3 | ) |  |  | (8.1 | )
Effect of exchange rate changes |  |  | — |  |  |  | (0.2 | ) |  |  | (0.2 | )
Balance at December 31, 2017 |  | $ | — |  |  | $ | 471.8 |  |  | $ | 471.8 |
2018 In principle, the payment term granted to customers is due 30 days from the invoice date or 30 days from the end of the month when the invoice is issued. Aside from recognizing impairment losses on credit-impaired accounts receivable, the Company recognizes loss allowance based on the expected credit loss ratio of customers by different risk levels. Such risk levels are determined with factors of historical loss ratios and customers’ financial conditions, competitiveness and business outlook. For accounts receivable past due over 90 days without collaterals or guarantees, the Company recognizes loss allowance at full amount. Aging analysis of notes and accounts receivable, net
|  | December 31, 2018 |
|  | NT$ |
|  | (In Millions) |
Not past due |  | $ | 113,126.5 |
Past due |  |  |  |
Past due within 30 days |  |  | 15,006.5 |
Past due 31-60 days |  |  | 472.8 |
Past due 61-120 days |  |  | 4.6 |
Past due over 121 days |  |  | 3.0 |
|  | $ | 128,613.4 |
Movements of the loss allowance for accounts receivable
|  | NT$ |
|  | (In Millions) |
Balance at January 1, 2018 (IAS 39) |  | $ | 471.8 |
Effect of retrospective application of IFRS 9 |  |  | (244.8 | )
Balance at January 1, 2018 (IFRS 9) |  |  | 227.0 |
Provision (Reversal) |  |  | (219.7 | )
Balance at December 31, 2018 |  | $ | 7.3 |
For the year ended December 31, 2018, the decrease in loss allowance was mainly due to the variations from accounts receivable balance of different risk levels.

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