Supplementary Information (Tables)

12 Months Ended

Dec. 31, 2020

Other Liabilities Disclosure [Abstract]

Changes in liability for product warranties

An analysis of changes in the liability for product warranties are as follows:

	2020		2019
Balance at beginning of year	$	220	$	236
Provisions	6		4
Expenditures	(11)		(14)
Other	1		(6)
Balance at end of year	$	216	$	220

Allowance for credit losses

Current receivables are comprised of the following at December 31:

	2020		2019
Customer receivables	$	4,676	$	5,448
Related parties	429		495
Other	890		796
Total current receivables	5,995		6,739
Less: Allowance for credit losses	(373)		(323)
Total current receivables, net	$	5,622	$	6,416

The change in allowance for credit losses is as follows:

	2020		2019
Balance at beginning of year	$	323	$	327
Provision	66		48
Write-offs & other	(16)		(52)
Balance at end of year	$	373	$	323

Schedule of cash flow supplemental disclosures

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

	2020		2019		2018
Income taxes paid, net of refunds	$	441	$	438	$	424
Interest paid	$	289	$	285	$	301