Leases - Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	Dec. 28, 2019	Mar. 31, 2019
Assets
Operating lease right-of-use assets	$ 1,665	$ 1,856
Current:
Short-term operating lease liabilities	406	$ 386
Non-current:
Long-term portion of operating lease liabilities	$ 1,751