Share-Based Compensation And Other Compensation Arrangements (Schedule Of Stock Unit Activity) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Weighted average remaining contractual life (in years)	6 years 9 months 23 days
Incentive Program Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of units, Outstanding at beginning of year	3,897,449
Number of units, Granted	1,398,286
Number of units, Dividends	72,405
Number of units, Forfeited	(201,030)
Number of units, Distributed	(1,444,793)
Number of units, Outstanding at end of year	3,722,317
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Unrecognized compensation cost	$ 104
Weighted average remaining contractual life (in years)	1 year 10 months
Other Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of units, Outstanding at beginning of year	1,251,189
Number of units, Granted	225,815
Number of units, Dividends	21,573
Number of units, Forfeited	(15,614)
Number of units, Distributed	(350,033)
Number of units, Outstanding at end of year	1,132,930
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Unrecognized compensation cost	$ 28
Weighted average remaining contractual life (in years)	2 years 2 months