Receivables (Details) (USD $) In Millions, unless otherwise specified	Mar. 28, 2014	Mar. 29, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, net	$ 2,759	$ 3,199
Unbilled recoverable amounts primarily from governments that are expected to be collected after one year	46
Billed trade accounts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, net	1,564	1,627
Unbilled recoverable amounts under contracts in progress [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, net	1,036	1,176
Other receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, net	$ 159	$ 396