ACCOUNTS RECEIVABLE AND OTHER FINANCIAL ASSETS (Tables)

6 Months Ended

Jun. 30, 2021

Receivables [Abstract]

Activity of the allowance for expected credit losses on receivables

The following table summarizes the activity of the allowance for expected credit losses on receivables (in millions):

	Six Months Ended June 30,
	2021		2020
Balance, beginning of year	$	166	$	49
Provision charged to earnings	11		241
Write-offs and adjustments	(82)		(11)
Foreign currency translation adjustments	(3)		3
Balance, end of period	$	92	$	282

Activity of the allowance for expected credit losses on prepayments to customers

The following table summarizes the activity of the allowance for expected credit losses on prepayments to customers (in millions):

	Six Months Ended June 30,
	2021		2020
Balance, beginning of year	$	55	$	6
Provision charged to expense	1		50
Write-offs and adjustments	(2)		—
Balance, end of period	$	54	$	56