Annual report pursuant to Section 13 and 15(d)

Financial Instruments (Details) (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value)

v3.6.0.2
Financial Instruments (Details) (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 26, 2015
Schedule of Investments [Line Items]    
Debt issuance cost, net $ 25 $ 25
Unamortized discount (308) 0
2.125% Convertible Senior Notes Due 2026    
Schedule of Investments [Line Items]    
Unamortized discount $ (308)  
Interest rate, stated percentage 2.125%  
Carrying Amount    
Schedule of Investments [Line Items]    
Short-term debt (excluding capital leases), at estimated fair value $ 0 230
Long-term debt (excluding capital leases), at estimated fair value 1,434 2,000
Estimated Fair Value | Fair Value, Inputs, Level 2    
Schedule of Investments [Line Items]    
Short-term debt (excluding capital leases), at estimated fair value 0 230
Long-term debt (excluding capital leases), at estimated fair value $ 2,313 $ 1,372