Schedule II - Valuation and Qualifying Accounts Allowance for Doubtful Accounts (Tables)

12 Months Ended

Dec. 31, 2023

SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]

Accounts Receivable, Allowance for Credit Loss

			Additions		Deductions
	Balance at Beginning of Year		Charged to Operations		Written Off		Balance at End of Year
Allowance for Credit Losses:
2023	$	19	$	11	$	(11)	$	19
2022	$	17	$	8	$	(6)	$	19
2021	$	17	$	5	$	(5)	$	17

Summary of Valuation Allowance

			Additions		Deductions
	Balance at Beginning of Year		Charged to Operations		Credited to Operations		Balance at End of Year
Deferred Tax Valuation Allowance:
2023	$	2	$	—	$	—	$	2
2022	$	—	$	2	$	—	$	2
2021	$	—	$	—	$	—	$	—