Discontinued Operations (Narrative) (Details) (USD $) In Millions	Mar. 27, 2011 Pacific Architects And Engineers, Inc. [Member]	Dec. 31, 2010 Pacific Architects And Engineers, Inc. [Member]	Jun. 27, 2010 Pacific Architects And Engineers, Inc. [Member]	Sep. 25, 2011 Savi Technology [Member]
Deferred tax asset	$ 15		$ 96	$ 66
Receivables, net		253
Goodwill and other assets		143
Accounts payable and accrued expenses		125
Other liabilities		$ 79