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
Accounts Receivable - Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 269	$ 243	$ 292
Additions charged to cost and expenses	59	72	33
Deductions from reserves	(88)	(46)	(64)
Amounts related to the Performance Coatings business	0	0	(18)
Balance at end of period	240	269	243
Deferred Tax Assets - Valuation Allowance [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	1,764	1,914	1,971
Additions charged to cost and expenses	(47)	29	(77)
Additions charged to other comprehensive income (loss)	135	(205)	10
Currency translation	(95)	26	10
Balance at end of period	$ 1,757	$ 1,764	$ 1,914