Fair Value - Fair Value Measurements on a Recurring Basis (Details) - Recurring - USD ($) $ in Millions	Jun. 30, 2023	Mar. 31, 2023
Assets:
Other debt securities	$ 48	$ 48
Total assets	175	160
Liabilities:
Contingent consideration		2
Total liabilities		2
Level 1
Assets:
Other debt securities	0	0
Total assets	127	112
Liabilities:
Contingent consideration		0
Total liabilities		0
Level 2
Assets:
Other debt securities	46	46
Total assets	46	46
Liabilities:
Contingent consideration		0
Total liabilities		0
Cost basis		52
Level 3
Assets:
Other debt securities	2	2
Total assets	2	2
Liabilities:
Contingent consideration		2
Total liabilities		2
Money market funds and money market deposit accounts
Assets:
Cash and cash equivalents	45	75
Money market funds and money market deposit accounts | Level 1
Assets:
Cash and cash equivalents	45	75
Money market funds and money market deposit accounts | Level 2
Assets:
Cash and cash equivalents	0	0
Money market funds and money market deposit accounts | Level 3
Assets:
Cash and cash equivalents	0	0
Time deposits
Assets:
Cash and cash equivalents	82	37
Time deposits | Level 1
Assets:
Cash and cash equivalents	82	37
Time deposits | Level 2
Assets:
Cash and cash equivalents	0	0
Time deposits | Level 3
Assets:
Cash and cash equivalents	$ 0	$ 0