Acquisition of Zenefits - Summary of the Fair Value of the Net Assets Acquired (Details) - USD ($) $ in Millions	Feb. 15, 2022	Jun. 30, 2022	Dec. 31, 2021
Liabilities Assumed
Goodwill at acquisition		$ 430	$ 294
Zenefits
Business Acquisition [Line Items]
Total purchase price	$ 209
Asset Acquired:
Cash	4
Restricted cash	5
Accounts receivable, net	4
Intangible assets	96
Operating lease right-of-use asset	9
Deferred tax asset	2
Other assets	5
Total assets acquired	125
Liabilities Assumed
Accounts payable and other current liabilities	9
Deferred revenue	13
Operating lease liabilities	15
Deferred taxes	18
Total liabilities assumed	55
Net assets acquired	70
Goodwill at acquisition	139	$ 136
Measurement period adjustments	$ (3)