Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2021

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

	Balance at beginning of period		Charged to costs and expenses		Charged to other accounts		Deductions		Balance at end of period
Year Ended December 31, 2021
Current expected credit losses on receivables and contract assets	$	7	$	2	$	—	$	—	$	9
Deferred tax asset valuation allowance	190		(127)		—		—		63
Year Ended December 31, 2020
Current expected credit losses on receivables and contract assets	$	—	$	7	$	—	$	—	$	7
Deferred tax asset valuation allowance	196		(6)		—		—		190
Year Ended December 31, 2019
Allowance for credit losses or doubtful accounts on receivables and contract assets	$	30	$	16	$	—	$	(46)	$	—
Deferred tax asset valuation allowance	686		(490)		—		—		196