Retirement Plans (Schedule Of Net Funded Status) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Curtailments	$ (7)
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	(188)	(152)	(121)
Interest cost	(576)	(604)	(544)
Actuarial (gain) loss	(485)	(307)	(212)
Fair value of plan assets, January 1	10,111
Fair value of plan assets, December 31	(10,706)	10,111
Funded status, December 31	(2,197)	(4,090)
U.S. Plans [Member] | Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	(742)	(802)
Fair value of plan assets, January 1	10,111	8,185
Actual return on plan assets	1,283	1,183
Company contributions	59	139
Settlements	(5)	0
Acquisitions	0	1,406
Effect of foreign currency exchange rate movements	0	0
Fair value of plan assets, December 31	10,706	10,111
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	(4)	(3)	(2)
Interest cost	(11)	(12)	(12)
Actuarial (gain) loss	(1)	0	0
Benefits paid	(8)	(8)
Fair value of plan assets, January 1	171	155
Actual return on plan assets	15	18
Company contributions	8	8
Settlements	(4)	(3)
Acquisitions	0	0
Effect of foreign currency exchange rate movements	(1)	1
Fair value of plan assets, December 31	181	171	155
Funded status, December 31	(47)	(52)
Benefit Obligation [Member] | U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, January 1	14,201	10,555
Service cost	188	152
Interest cost	576	604
Curtailments	(14)	0
Settlements	(5)	0
Actuarial (gain) loss	(1,309)	1,923
Acquisitions	0	1,749
Plan amendments	0	20
Special termination benefits	8	0
Benefits paid	(742)	(802)
Effect of foreign currency exchange rate movements	0	0
Benefit obligation, December 31	12,903	14,201
Benefit Obligation [Member] | Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, January 1	223	183
Service cost	4	3
Interest cost	11	12
Curtailments	0	0
Settlements	(4)	(3)
Actuarial (gain) loss	0	30
Acquisitions	3	3
Plan amendments	0	0
Special termination benefits	0	0
Benefits paid	(8)	(8)
Effect of foreign currency exchange rate movements	(1)	3
Benefit obligation, December 31	$ 228	$ 223