Net Loss Per Common Share (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss attributable to common shareholders	$ (344)	$ (53)	$ (248)	$ (38)
Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Average common shares outstanding-basic	380	377	379	377
Stock options, restricted stock and the global stock purchase plan	0	0	0	0
Average common shares outstanding-diluted	380	377	379	377