Equity - Restricted Stock Units (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other disclosures
Share-based payments subject to redemption	$ 55	$ 48	$ 36	$ 30
Restricted Stock Units ("RSUs") | Employee
Share-based compensation
Vesting terms	3 years
Restricted stock unit activity
Non-vested at the beginning of the period (in shares)	517
Granted (in shares)	222
Vested (in shares)	(154)
Cancelled (in shares)	(33)
Non-vested at the end of the period (in shares)	552	517
Weighted-average fair value per share
Non-vested at the beginning of the period (in dollars per share)	$ 88.04
Granted (in dollars per share)	98.15
Vested (in dollars per share)	87.91
Cancelled (in dollars per share)	91.30
Non-vested at the end of the period (in dollars per share)	$ 92.05	$ 88.04
Other disclosures
Fair value of awards vested during the year	$ 12	$ 12	$ 12
Unrecognized compensation cost	$ 20
Weighted-average period for amortization of unrecognized compensation cost	1 year 8 months 12 days
Share-based payments subject to redemption	$ 28