Retirement Plans (Schedule Of Amounts In Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	$ 107	$ 144
Net actuarial loss	3,285	5,640
Amounts recognized in accumulated other comprehensive income (pre-tax)	3,392	5,784
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	0	0
Net actuarial loss	29	34
Amounts recognized in accumulated other comprehensive income (pre-tax)	$ 29	$ 34