Information By Segment and Geographic Region (Geographic Area Information) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 1,682	$ 1,422	$ 1,368	$ 1,223	$ 1,824	$ 1,436	$ 1,393	$ 1,228	$ 5,695	$ 5,881	$ 6,227
Assets	8,387				10,423				8,387	10,423
Continuing Operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									5,695	5,881	6,227
Assets	8,387				10,423				8,387	10,423	9,309
Continuing Operations | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									3,473	3,354	3,648
Assets	6,254				8,468				6,254	8,468	6,201
Continuing Operations | United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									96	128	112
Assets	1,127				966				1,127	966	1,607
Continuing Operations | Other, net of eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									2,126	2,399	2,467
Assets	$ 1,006				$ 989				$ 1,006	$ 989	$ 1,501