Retirement Benefits (Components Of Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 46	$ 61
Interest cost	50	128	174
Expected return on assets	(16)	(17)	(20)
Curtailments	0	(124)	0
Settlements	0	0	0
Amortization of prior service cost	(251)	(82)	(28)
Amortization of unrecognized net (gain) loss	(9)	(9)	(9)
Net periodic benefit cost	(226)	(58)	178
Defined Benefit Plan and Defined Contribution Plan Periodic Benefit Cost	(226)	(58)	178
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	341	386
Interest cost	654	729	757
Expected return on assets	(720)	(676)	(657)
Curtailments	2	58	0
Settlements	(1)	0	0
Amortization of prior service cost	28	10	13
Amortization of unrecognized net (gain) loss	90	211	154
Net periodic benefit cost	56	673	653
Defined contribution plans	328	218	179
Defined Benefit Plan and Defined Contribution Plan Periodic Benefit Cost	384	891	832
AA [Member] | Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	46	61
Interest cost	50	128	174
Expected return on assets	(16)	(17)	(20)
Curtailments	0	(124)	0
Settlements	0	0	0
Amortization of prior service cost	(251)	(82)	(28)
Amortization of unrecognized net (gain) loss	(9)	(9)	(9)
Net periodic benefit cost	(226)	(58)	178
Defined Benefit Plan and Defined Contribution Plan Periodic Benefit Cost	(226)	(58)	178
AA [Member] | Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	341	386
Interest cost	654	729	757
Expected return on assets	(720)	(676)	(657)
Curtailments	2	58	0
Settlements	(1)	0	0
Amortization of prior service cost	28	10	13
Amortization of unrecognized net (gain) loss	90	211	154
Net periodic benefit cost	56	673	653
Defined contribution plans	303	202	162
Defined Benefit Plan and Defined Contribution Plan Periodic Benefit Cost	$ 359	$ 875	$ 815