Equity - Schedule of stock based compensation expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-based compensation expense
Pre-tax compensation expense	$ 13	$ 9
Income tax benefit	(1)	(1)
Total share-based compensation expense, net of income taxes	12	8
Stock options
Share-based compensation expense
Pre-tax compensation expense	2	1
Income tax benefit	0	0
Total share-based compensation expense, net of income taxes	2	1
RSUs | Employee
Share-based compensation expense
Pre-tax compensation expense	7	4
Income tax benefit	(1)	(1)
Total share-based compensation expense, net of income taxes	6	3
Performance shares and other share-based awards
Share-based compensation expense
Pre-tax compensation expense	4	4
Income tax benefit	0	0
Total share-based compensation expense, net of income taxes	$ 4	$ 4