Restructuring and Related Activities (Tables)

12 Months Ended

Dec. 31, 2021

Restructuring and Related Activities [Abstract]

Restructuring and Related Costs

Restructuring and Other Costs, Before Tax
	Incurred in the Year Ended December 31, 2020		Incurred in the Year Ended December 31, 2021		Cumulative Incurred Through December 31, 2021		Total Amount Expected to be Incurred
Severance benefits	$	73	$	(25)	$	48	$	48
IT costs	2		9		11		21
Professional fees and other expenses	29		17		46		61
Total restructuring and other costs, before tax	$	104	$	1	$	105	$	130

Schedule of Restructuring Reserve by Type of Cost

Accrued Restructuring and Other Costs
	Year Ended December 31, 2021
	Severance Benefits and Related Costs		IT Costs		Professional Fees and Other		Total Restructuring and Other Costs Liability
Balance, beginning of period	$	54	$	—	$	—	$	54
Incurred	(25)		9		17		1
Payments	(11)		(9)		(17)		(37)
Balance, end of period	$	18	$	—	$	—	$	18

Accrued Restructuring and Other Costs
	Year Ended December 31, 2020
	Severance Benefits and Related Costs		IT Costs		Professional Fees and Other		Total Restructuring and Other Costs Liability
Balance, beginning of period	$	—	$	—	$	—	$	—
Incurred	73		2		29		104
Payments	(19)		(2)		(29)		(50)
Balance, end of period	$	54	$	—	$	—	$	54