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Receivables, Net (Tables)
12 Months Ended
Dec. 31, 2022
Receivables, Net  
Schedule of receivables

December 31,

($ in millions)

2022

    

2021

Trade accounts receivable

$

1,373

$

1,304

Unbilled receivables

746

727

Less: Allowance for doubtful accounts

(12)

(9)

Net trade accounts receivable

2,107

2,022

Other receivables

487

538

$

2,594

$

2,560