Restructuring and Integration (Tables)

12 Months Ended

Dec. 31, 2023

Restructuring and Related Activities [Abstract]

Summary of Restructuring Costs

The following table summarizes restructuring costs by type that have been incurred through December 31, 2023:

	Twelve Months Ended					Estimated		Estimated
	December 31,			Inception to		Remaining		Total
	2023			Date		Costs		Cost
Employer Solutions
Severance and Related Benefits	$	11	$		11	$	10	$	21
Other Restructuring Costs(1)		56			56		35		91
Total Employer Solutions	$	67	$		67	$	45	$	112
Professional Services
Severance and Related Benefits	$	1	$		1	$	3	$	4
Total Professional Services	$	1	$		1	$	3	$	4
Corporate
Severance and Related Benefits	$	15	$		15	$	6	$	21
Other Restructuring Costs(1)		2			2		1		3
Total Corporate	$	17	$		17	$	7	$	24
Total Restructuring Costs	$	85	$		85	$	55	$	140

(1)Other restructuring costs associated with the Transformation Program primarily include data center exit costs, third party fees associated with the restructuring, and costs associated with transitioning existing technology and processes.

Schedule of Accrued Restructuring Liability

As of December 31, 2023, approximately $10 million of the Company's total restructuring liability is unpaid and is recorded in Accounts payable and accrued liabilities on the Consolidated Balance Sheets.

	Severance and Related Benefits			Other Restructuring Costs			Total
Accrued restructuring liability as of December 31, 2022	$	—		$	—		$	—
Restructuring charges		27			58			85
Cash payments		(21	)		(55	)		(76	)
Accrued restructuring liability as of December 31, 2023	$	6		$	3		$	9

The following table summarizes the changes in the accrual balance:

	Severance and			Other Restructuring
	Related Benefits			Costs			Total
Accrued restructuring liability as of December 31, 2022	$	4		$	4		$	8
Cash payments		(3	)		(4	)		(7	)
Accrued restructuring liability as of December 31, 2023	$	1		$	—		$	1