Employee Benefit Plans (Changes In Defined Benefit Obligation And Fair Value Of Defined Benefit Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2012
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, ending	$ 2,194			$ 2,194	$ 2,341
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning				2,814	2,954
Service cost		44	36	71	84	71
Interest cost		61	65	126	114	130
Actuarial loss (gain)				688	(236)
Employee contributions				2	2
Curtailments				(5)	0
Settlements				(304)	0
Defined Benefit Plan, Business Combinations and Acquisitions, Benefit Obligation				136	0
Remeasurement charge						30
Benefits paid				(109)	(119)
Plan Amendments				(4)	(1)
Actual expenses				(2)	(2)
Foreign currency effects				(108)	18
Benefit obligation, ending	3,305	2,954		3,305	2,814
Fair value of plan assets, beginning				2,341	2,174
Actual return on plan assets				292	222
Employer contributions				42	50
Settlements				(304)	0
Defined Benefit Plan, Business Combinations and Acquisitions, Plan Assets				10	0
Foreign currency effects				(78)	14
Fair value of plan assets, ending	2,194	2,174		2,194	2,341
Funded status	(1,111)			(1,111)	(473)
Prepaid benefit cost	27			27	63
Accrued benefit liability - current	(17)			(17)	(15)
Accrued benefit liability - long-term	(1,121)			(1,121)	(521)
Net amount recognized in the balance sheet	(1,111)			(1,111)	(473)
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning				174	208
Service cost		4	3	4	5	7
Interest cost		6	6	8	7	12
Actuarial loss (gain)				54	(34)
Defined Benefit Plan, Business Combinations and Acquisitions, Benefit Obligation				0	0
Remeasurement charge						4
Benefits paid				(12)	(12)
Plan Amendments	3				0
Benefit obligation, ending	231	208		231	174
Employer contributions				12	12
Defined Benefit Plan, Business Combinations and Acquisitions, Plan Assets				0	0
Funded status	(231)			(231)	(174)
Accrued benefit liability - current	(12)			(12)	(11)
Accrued benefit liability - long-term	(219)			(219)	(163)
Net amount recognized in the balance sheet	$ (231)			$ (231)	$ (174)