Estimated Future Amortization Expense for Identifiable Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	Mar. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Estimated amortization expense 2013	$ 93
Estimated amortization expense 2014	114
Estimated amortization expense 2015	113
Estimated amortization expense 2016	112
Estimated amortization expense 2017	111
2018	$ 108