ACCOUNTS RECEIVABLE - NET

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

Accounts Receivable - Net

	March 31, 2021		December 31, 2020
Trade	$	6,874	$	7,029
Less - Allowance for doubtful accounts	(199)		(202)
	$	6,675	$	6,827

Trade receivables include $1,750 million and $1,589 million of unbilled balances under long-term contracts as of March 31, 2021 and December 31, 2020. These amounts are billed in accordance with the terms of the customer contracts to which they relate.