Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 3,446	$ 3,707
United States
Disaggregation of Revenue [Line Items]
Revenues	1,002	1,131
United Kingdom
Disaggregation of Revenue [Line Items]
Revenues	465	473
Other Europe
Disaggregation of Revenue [Line Items]
Revenues	1,064	1,138
Australia
Disaggregation of Revenue [Line Items]
Revenues	342	391
Other International
Disaggregation of Revenue [Line Items]
Revenues	$ 573	$ 574