Long-Term Employee Benefits (Schedule of Fair Value of Plan Assets Held in Level 3) (Details) (Level 3 Inputs [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 4,510	$ 4,500
Realized gain (loss)	42	14
Change in unrealized gain (loss)	192	253
Purchases, sales and settlements, net	(278)	(134)
Transfers (out) in of Level 3	4	(123)
Ending balance	4,470	4,510
U.S. Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	18	28
Realized gain (loss)	0	(3)
Change in unrealized gain (loss)	5	(8)
Purchases, sales and settlements, net	6	(1)
Transfers (out) in of Level 3	(2)	2
Ending balance	27	18
Non-U.S. Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0	0
Realized gain (loss)	0	0
Change in unrealized gain (loss)	1	0
Purchases, sales and settlements, net	1	0
Transfers (out) in of Level 3	1	0
Ending balance	3	0
Debt - corporate issued [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	27	30
Realized gain (loss)	0	0
Change in unrealized gain (loss)	(8)	(10)
Purchases, sales and settlements, net	(1)	7
Transfers (out) in of Level 3	1	0
Ending balance	19	27
Debt - Asset-backed [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2	4
Realized gain (loss)	0	0
Change in unrealized gain (loss)	0	0
Purchases, sales and settlements, net	0	(2)
Transfers (out) in of Level 3	2	0
Ending balance	4	2
Hedge funds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	387	392
Realized gain (loss)	3	(6)
Change in unrealized gain (loss)	22	17
Purchases, sales and settlements, net	22	(16)
Transfers (out) in of Level 3	0	0
Ending balance	434	387
Private market securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2,922	2,959
Realized gain (loss)	39	23
Change in unrealized gain (loss)	95	179
Purchases, sales and settlements, net	(181)	(114)
Transfers (out) in of Level 3	2	(125)
Ending balance	2,877	2,922
Real Estate [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,154	1,087
Realized gain (loss)	0	0
Change in unrealized gain (loss)	77	75
Purchases, sales and settlements, net	(125)	(8)
Transfers (out) in of Level 3	0	0
Ending balance	$ 1,106	$ 1,154