Other Liabilities (Summary Of Significant Other Liabilities By Balance Sheet Caption) (Details) (USD $) In Millions, unless otherwise specified	Apr. 01, 2012		Dec. 31, 2011
Other Liabilities [Abstract]
Salaries and wages	$ 679		$ 845
Workers' compensation	565		575
Retirement benefits	282		275
Federal income tax payable	214		46
Deferred income taxes	95		131
Other	1,307	[1]	1,344	[1]
Total other current liabilities	3,142		3,216
Retirement benefits	4,677		4,627
Customer deposits on commercial contracts	1,049		1,132
Deferred income taxes	201		170
Other	670	[2]	670	[2]
Total other liabilities	$ 6,597		$ 6,599

[1] Consists primarily of dividends payable, environmental remediation reserves, warranty reserves, liabilities of discontinued operations and insurance-related costs.

[2] Consists primarily of liabilities for warranty reserves and workers' compensation.