Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011
Income Taxes [Line Items]
U.S. income (loss) from continuing operations before income taxes		$ 77	$ 2	$ (342)
Non-U.S. income (loss) from continuing operations before income taxes		8	2	(4)
AMT credit carryforwards		9
Deferred tax assets, valuation allowance		59	51
Federal research and development tax credits	1
Cash paid for taxes		3	2	2
Unrecognized tax benefits that would affect effective tax rate if recognized		7	5
Interest and penalties accrued for uncertain tax positions		1
Additional Paid in Capital	308	322	131
Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforwards		824
Net operating loss carryforwards, expirations		beginning 2025 through 2031.
Foreign [Member]
Income Taxes [Line Items]
Net operating loss carryforwards		$ 117
Minimum [Member] | Federal [Member]
Income Taxes [Line Items]
Open tax years		2004
Maximum [Member] | Federal [Member]
Income Taxes [Line Items]
Open tax years		2009