Supplementary Information (Tables)

12 Months Ended

Dec. 31, 2021

Other Liabilities Disclosure [Abstract]

Schedule of Allowance for Credit Losses

Current receivables are comprised of the following at December 31:

	2021		2020
Customer receivables	$	4,724	$	4,676
Related parties	548		507
Other	846		890
Total current receivables	6,118		6,073
Less: Allowance for credit losses	(400)		(373)
Total current receivables, net	$	5,718	$	5,700

The change in allowance for credit losses is as follows:

	2021		2020
Balance at beginning of year	$	373	$	323
Provision	72		66
Write-offs & other	(45)		(16)
Balance at end of year	$	400	$	373

Schedule of Cash Flow Supplemental Disclosures

Supplemental cash flow disclosures are as follows for the years ended December 31:

	2021		2020		2019
Income taxes paid, net of refunds	$	314	$	452	$	446
Interest paid	$	305	$	289	$	285