Other Comprehensive Income Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income (Loss) Table) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (3,840)	[1]	$ (3,005)	[1]	$ (1,825)	[1]
Other comprehensive income (loss), before reclassifications, net of tax	741	[1]	(1,020)	[1]	(1,323)	[1]
Reclassification from accumulated other comprehensive income, current period, net of tax	317	[1]	182	[1]	147	[1]
Other comprehensive income (loss), net of tax	1,058	[1]	(838)	[1]	(1,176)	[1]
Comprehensive (income) loss, net of tax, attributable to noncontrolling interest	23	[1]	3	[1]	(4)	[1]
Ending balance	(2,759)	[1]	(3,840)	[1]	(3,005)	[1]
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(3,596)	[1]	(2,852)	[1]	(2,203)	[1]
Other comprehensive income (loss), before reclassifications, net of tax	1,184	[1]	(939)	[1]	(788)	[1]
Reclassification from accumulated other comprehensive income, current period, net of tax	307	[1]	195	[1]	139	[1]
Other comprehensive income (loss), net of tax	1,491	[1]	(744)	[1]	(649)	[1]
Comprehensive (income) loss, net of tax, attributable to noncontrolling interest	0	[1]	0	[1]	0	[1]
Ending balance	(2,105)	[1]	(3,596)	[1]	(2,852)	[1]
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(246)	[1]	(118)	[1]	378	[1]
Other comprehensive income (loss), before reclassifications, net of tax	(443)	[1]	(96)	[1]	(492)	[1]
Reclassification from accumulated other comprehensive income, current period, net of tax	17	[1]	(35)	[1]	0	[1]
Other comprehensive income (loss), net of tax	(426)	[1]	(131)	[1]	(492)	[1]
Comprehensive (income) loss, net of tax, attributable to noncontrolling interest	23	[1]	3	[1]	(4)	[1]
Ending balance	(649)	[1]	(246)	[1]	(118)	[1]
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	2	[1]	(35)	[1]	0	[1]
Other comprehensive income (loss), before reclassifications, net of tax	0	[1]	15	[1]	(43)	[1]
Reclassification from accumulated other comprehensive income, current period, net of tax	(7)	[1]	22	[1]	8	[1]
Other comprehensive income (loss), net of tax	(7)	[1]	37	[1]	(35)	[1]
Comprehensive (income) loss, net of tax, attributable to noncontrolling interest	0	[1]	0	[1]	0	[1]
Ending balance	$ (5)	[1]	$ 2	[1]	$ (35)	[1]

[1] All amounts are net of tax. Amounts in parentheses indicate debits to AOCI.