Retirement Plans (Net Periodic Pension Expense For Qualified And Nonqualified U.S. Defined Benefit Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 188	$ 152	$ 121
Interest cost	576	604	544
Expected return on plan assets	(738)	(753)	(713)
Actuarial (gain) loss	485	307	212
Amortization of prior service cost	34	32	31
Settlement gain	0	0	0
Net periodic pension expense	545	342	195
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	3	2
Interest cost	11	12	12
Expected return on plan assets	(11)	(12)	(12)
Actuarial (gain) loss	1	0	0
Amortization of prior service cost	0	0	0
Settlement gain	0	0	(1)
Net periodic pension expense	$ 5	$ 3	$ 1