Retirement Benefits (Schedule Of Defined Benefit Plan Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 62		$ 61	$ 123	$ 125
Interest cost	161		144	322	289
Expected return on plan assets	(250)		(225)	(498)	(453)
Amortization of prior service credit	(3)		(6)	(6)	(11)
Recognized actuarial loss	53		80	104	158
Net periodic benefit cost				45	108
Curtailment (credit)				(65)	0
Total cost (credit)	23		54	(20)	108
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	23		25	45	52
Interest cost	62		57	125	114
Expected return on plan assets	(87)		(81)	(173)	(162)
Amortization of prior service credit	(2)		(4)	(4)	(8)
Recognized actuarial loss	27		53	53	104
Total cost (credit)	23		50	46	100
Non-U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	39		36	78	73
Interest cost	99		87	197	175
Expected return on plan assets	(163)		(144)	(325)	(291)
Amortization of prior service credit	(1)		(2)	(2)	(3)
Recognized actuarial loss	26		27	51	54
Net periodic benefit cost				(1)	8
Curtailment (credit)		(65)		(65)	0
Total cost (credit)	0		4	(66)	8
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1			2	2
Interest cost	3		3	6	6
Expected return on plan assets
Amortization of prior service credit
Recognized actuarial loss			1		1
Net periodic benefit cost				8	9
Curtailment (credit)				0	0
Total cost (credit)	4		4	8	9
U.S. Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1			1	1
Interest cost	2		2	4	4
Expected return on plan assets
Amortization of prior service credit
Recognized actuarial loss	(1)			(1)
Total cost (credit)	2		2	4	5
Foreign Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost				1	1
Interest cost	1		1	2	2
Expected return on plan assets
Amortization of prior service credit
Recognized actuarial loss	1		1	1	1
Net periodic benefit cost				4	4
Curtailment (credit)				0	0
Total cost (credit)	$ 2		$ 2	$ 4	$ 4