Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2019	Apr. 01, 2017
Income Tax Contingency [Line Items]
Effective income tax rate	46.20%	15.60%
Foreign earnings not indefinitely reinvested	$ 485
Potential federal and state cost from tax examinations	483
Decrease in liability for uncertain tax positions		$ 3
Reasonably possible reduction in liability for uncertain tax positions	12
HPES
Income Tax Contingency [Line Items]
Tax indemnification receivable, uncertain tax positions				$ 16
Tax indemnification receivable, tax indemnification payable				53
Tax indemnification payable				$ 89
Perspecta
Income Tax Contingency [Line Items]
Tax indemnification receivable			$ 18
Tax indemnification payable			$ 6
India
Income Tax Contingency [Line Items]
Cumulative undistributed earnings of foreign subsidiaries	$ 200