Reorganization of Business (Narrative) (Details) (USD $)	3 Months Ended
	Apr. 04, 2015	Mar. 29, 2014	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 14,000,000	$ 10,000,000
Restructuring reserve	44,000,000		57,000,000
Restructuring charges	14,000,000
Restructuring charges settled with cash	28,000,000
Restructuring reversals no longer needed	1,000,000	(1,000,000)
Employee separation costs
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	10,000,000
Restructuring reserve	39,000,000		57,000,000
Restructuring charges	10,000,000	8,000,000
Restructuring charges settled with cash	28,000,000
Restructuring reversals no longer needed	0
Number of Employees Impacted By Reorganization of Business
Restructuring charges in the period for total employee severance (in number of employees)	100
Number of employees expected to be paid (in number of employees)	450
Exit costs
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	4,000,000	3,000,000
Restructuring reserve	5,000,000		0
Restructuring charges	4,000,000
Restructuring charges settled with cash	0
Restructuring reversals no longer needed	1,000,000
Other charges
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	12,000,000	9,000,000
Costs of sales
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 2,000,000	$ 1,000,000