Consolidated Statements Of Shareholders' Equity (Minority Equity) Parenthetical (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tax on foreign currency translation	$ (46)	$ 0	$ 0
Tax on amortization of prior service cost and unrecognized gains and losses included in total benefit cost	(36)	(10)	(9)
Tax on decrease (increase) in net actuarial losses	(135)	34	(54)
Tax on immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	13	1	1
Tax on prior service cost from plan amendments	0	0	3
Tax on deferred derivative gain (loss)	1	1	0
Tax on reclassification adjustment for amounts recognized in income	1	0	3
Comprehensive Loss	2,277	1,320	(382)
Minority Shareholders' Equity - Redeemable
Tax on foreign currency translation	0	0	0
Tax on amortization of prior service cost and unrecognized gains and losses included in total benefit cost	0	1	0
Tax on decrease (increase) in net actuarial losses	(6)	1	(10)
Tax on immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	0	0	0
Tax on prior service cost from plan amendments	0	0	0
Tax on deferred derivative gain (loss)	0	0	0
Tax on reclassification adjustment for amounts recognized in income	$ (1)	$ 0	$ 0