Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Allowance for doubtful accounts and notes receivable [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 47		$ 50		$ 13
Charged to Expense	29		10		36
Deductions	(5)	[1]	(13)	[1]	1	[1]
Balance at end of period	71		47		50
Deferred tax asset valuation allowance [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	127		329		210
Charged to Expense	(13)		20		61
Other	(7)	[2]	(222)	[2]	54	[2]
Deductions					4
Balance at end of period	$ 107		$ 127		$ 329

[1] Amounts charged off less recoveries of amounts previously charged off.

[2] Represents acquisitions/dispositions/revisions, net transfers associated with the Separation and the effect of translating foreign financial statements.