v3.20.4
Receivables and Expected Credit Losses (Tables)
 12 Months Ended
Dec. 31, 2020
Receivables [Abstract]  
Schedule of Equipment Installment Plan Receivables
The following table summarizes the EIP receivables, including imputed discounts and related allowance for credit losses:
(in millions)December 31,
2020		December 31,
2019
EIP receivables, gross (1)
$6,213 $4,582 
Unamortized imputed discount(325)(299)
EIP receivables, net of unamortized imputed discount5,888 4,283 
Allowance for credit losses (2)
(280)(100)
EIP receivables, net of allowance for credit losses and imputed discount$5,608 $4,183 
Classified on the balance sheet as:
Equipment installment plan receivables, net of allowance for credit losses and imputed discount$3,577 $2,600 
Equipment installment plan receivables due after one year, net of allowance for credit losses and imputed discount2,031 1,583 
EIP receivables, net of allowance for credit losses and imputed discount$5,608 $4,183 
(1) Through the Merger, we acquired EIP receivables with a fair value of $1.3 billion as of April 1, 2020. As they were recorded at fair value, an imputed discount was not recognized on the acquired receivables.
(2) Allowance for credit losses as of December 31, 2020 was impacted by the cumulative effect of initially applying the new credit loss standard on our receivables portfolio on January 1, 2020, which resulted in an increase to our allowance for credit losses of $91 million.
Schedule of Equipment Installment Plan Receivables by Credit Category The following table presents the
amortized cost of our EIP receivables by delinquency status, customer credit class, and year of origination as of December 31, 2020.

Originated in 2020Originated in 2019Originated prior to 2019Total EIP Receivables, net of
unamortized imputed discounts
(in millions)PrimeSubprimePrimeSubprimePrimeSubprimePrimeSubprimeGrand total
Current - 30 days past due$2,654 $2,035 $528 $407 $124 $26 $3,306 $2,468 $5,774 
31 - 60 days past due16 30 6 12 1 — 23 42 65 
61 - 90 days past due4 13 2 5 — — 6 18 24 
More than 90 days past due3 11 2 6 1 2 6 19 25 
EIP receivables, net of unamortized imputed discount$2,677 $2,089 $538 $430 $126 $28 $3,341 $2,547 $5,888 
Schedule of Unamortized Imputed Discount and Allowance for Credit Losses for Equipment Installment Plan Receivables
Activity for the years ended December 31, 2020, 2019 and 2018 in the allowance for credit losses and unamortized imputed discount balances for the accounts receivable and EIP receivables segments were as follows:
December 31, 2020December 31, 2019December 31, 2018
(in millions)Accounts Receivable AllowanceEIP Receivables AllowanceTotalAccounts Receivable AllowanceEIP Receivables AllowanceTotalAccounts Receivable AllowanceEIP Receivables AllowanceTotal
Allowance for credit losses and imputed discount, beginning of period$61 $399 $460 $67 $449 $516 $86 $396 $482 
Beginning balance adjustment due to implementation of the new credit loss standard— 91 91 — — — — — — 
Bad debt expense338 264 602 77 230 307 69 228 297 
Write-offs, net of recoveries(205)(175)(380)(83)(249)(332)(88)(240)(328)
Change in imputed discount on short-term and long-term EIP receivablesN/A171 171 N/A136 136 N/A250 250 
Impact on the imputed discount from sales of EIP receivablesN/A(145)(145)N/A(167)(167)N/A(185)(185)
Allowance for credit losses and imputed discount, end of period$194 $605 $799 $61 $399 $460 $67 $449 $516