Annual report pursuant to Section 13 and 15(d)

Commitments and Guarantees (Details) (Schedule of Changes in Product Warranty Liability)

v2.4.1.9
Commitments and Guarantees (Details) (Schedule of Changes in Product Warranty Liability) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Changes in Product Warranty Liability [Roll Forward]    
Beginning balance $ 17us-gaap_ProductWarrantyAccrual $ 16us-gaap_ProductWarrantyAccrual
New warranties issued during the period 32us-gaap_ProductWarrantyAccrualWarrantiesIssued 27us-gaap_ProductWarrantyAccrualWarrantiesIssued
Settlements during the period (39)us-gaap_ProductWarrantyAccrualPayments (25)us-gaap_ProductWarrantyAccrualPayments
Changes in liability for pre-existing warranties during the period, including expirations 9us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease (1)us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease
Ending balance $ 19us-gaap_ProductWarrantyAccrual $ 17us-gaap_ProductWarrantyAccrual