Common Stock and Stockholders’ Equity (Deficit) (Details) (Allocation of Recognized Period Costs) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 27, 2014	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 5,000,000	$ 86,000,000	$ 63,000,000	$ 81,000,000
Excess tax benefits from stock-based compensation		0	0	0
Cost of Sales
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense		2,000,000	3,000,000	3,000,000
Research and Development Expense
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense		49,000,000	36,000,000	44,000,000
Selling, General and Administrative Expenses
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense		$ 35,000,000	$ 24,000,000	$ 34,000,000