Retirement Benefits (Schedule Of Defined Benefit Plan Net Periodic Benefit Cost) (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 50,000,000		$ 62,000,000		$ 102,000,000	$ 123,000,000
Interest cost	146,000,000		161,000,000		292,000,000	322,000,000
Expected return on plan assets	(243,000,000)		(250,000,000)		(486,000,000)	(498,000,000)
Amortization of prior service credit	0		(3,000,000)		0	(6,000,000)
Recognized actuarial loss (gain)	78,000,000		53,000,000		154,000,000	104,000,000
Net periodic benefit cost					62,000,000	45,000,000
Curtailment credit					0	(65,000,000)
Plan termination					0	0
Total cost (credit)	31,000,000		23,000,000		62,000,000	(20,000,000)
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	29,000,000		23,000,000		59,000,000	45,000,000
Interest cost	63,000,000		62,000,000		125,000,000	125,000,000
Expected return on plan assets	(92,000,000)		(87,000,000)		(184,000,000)	(173,000,000)
Amortization of prior service credit	0		(2,000,000)		0	(4,000,000)
Recognized actuarial loss (gain)	46,000,000		27,000,000		91,000,000	53,000,000
Net periodic benefit cost	46,000,000		23,000,000		91,000,000	46,000,000
Plan termination	0		0		0	0
Total cost (credit)	46,000,000		23,000,000		91,000,000	46,000,000
Non-U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	21,000,000		39,000,000		43,000,000	78,000,000
Interest cost	83,000,000		99,000,000		167,000,000	197,000,000
Expected return on plan assets	(151,000,000)		(163,000,000)		(302,000,000)	(325,000,000)
Amortization of prior service credit	0		(1,000,000)		0	(2,000,000)
Recognized actuarial loss (gain)	32,000,000		26,000,000		63,000,000	51,000,000
Net periodic benefit cost					(29,000,000)	(1,000,000)
Curtailment credit				$ (65,000,000)	0	(65,000,000)
Total cost (credit)	(15,000,000)		0		(29,000,000)	(66,000,000)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,000,000		1,000,000		2,000,000	2,000,000
Interest cost	2,000,000		3,000,000		4,000,000	6,000,000
Expected return on plan assets	0		0		0	0
Amortization of prior service credit	1,000,000		0		1,000,000	0
Recognized actuarial loss (gain)	(1,000,000)		0		(1,000,000)	0
Net periodic benefit cost					6,000,000	8,000,000
Curtailment credit					0	0
Plan termination					(128,000,000)	0
Total cost (credit)	3,000,000	$ (125,000,000)	4,000,000		(122,000,000)	8,000,000
U.S. Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0		1,000,000		1,000,000	1,000,000
Interest cost	1,000,000		2,000,000		2,000,000	4,000,000
Expected return on plan assets	0		0		0	0
Amortization of prior service credit	1,000,000		0		1,000,000	0
Recognized actuarial loss (gain)	(1,000,000)		(1,000,000)		(1,000,000)	(1,000,000)
Net periodic benefit cost	1,000,000		2,000,000		3,000,000	4,000,000
Plan termination	0		0		(128,000,000)	0
Total cost (credit)	1,000,000		2,000,000		(125,000,000)	4,000,000
Foreign Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,000,000		0		1,000,000	1,000,000
Interest cost	1,000,000		1,000,000		2,000,000	2,000,000
Expected return on plan assets	0		0		0	0
Amortization of prior service credit	0		0		0	0
Recognized actuarial loss (gain)	0		1,000,000		0	1,000,000
Net periodic benefit cost					3,000,000	4,000,000
Curtailment credit					0	0
Total cost (credit)	$ 2,000,000		$ 2,000,000		$ 3,000,000	$ 4,000,000