Reorganization of Business (Narrative) (Details)	3 Months Ended
	Apr. 02, 2016 USD ($) employee	Apr. 04, 2015 USD ($)	Dec. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 23,000,000	$ 14,000,000
Restructuring, additional charges	24,000,000
Restructuring, reversal of accruals no longer needed	4,000,000
Restructuring reserve	57,000,000		$ 60,000,000
Restructuring charges settled with cash	23,000,000
Employee separation costs
Restructuring Cost and Reserve [Line Items]
Restructuring, additional charges	24,000,000	10,000,000
Restructuring, reversal of accruals no longer needed	4,000,000
Restructuring reserve	50,000,000		51,000,000
Restructuring charges settled with cash	$ 21,000,000
Number of Employees Impacted By Reorganization of Business
Restructuring charges in the period for total employee severance (in number of employees) | employee	250
Number of employees expected to be paid (in number of employees) | employee	400
Exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring, additional charges	$ 0	4,000,000
Restructuring, reversal of accruals no longer needed	0
Restructuring reserve	7,000,000		$ 9,000,000
Restructuring charges settled with cash	2,000,000
Other charges
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	7,000,000	12,000,000
Costs of sales
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	16,000,000	$ 2,000,000
Corporate aircraft | Asset Impairment Due Reorganization
Restructuring Cost and Reserve [Line Items]
Restructuring, impairment of assets	3,000,000
Continuing Operations | Employee separation costs
Restructuring Cost and Reserve [Line Items]
Restructuring, reversal of accruals no longer needed	$ 4,000,000