Condensed Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating activities:
Net income attributable to the controlling and noncontrolling interests	$ 1,301	$ 2,445
Less: Income from discontinued operations	(1,018)	(2,248)
Income from continuing operations	283	197
Adjustments to reconcile to cash from operations:
Depreciation and amortization	119	101
Pension expense	18	31
Environmental remediation charge	0	12
Canadian pension settlement charge	0	18
Stock-based compensation expense	18	15
Equity affiliate losses, net of dividends	7	6
Deferred income taxes	(1)	(66)
Cash contributions to pension plans	(5)	(15)
Restructuring cash spending	(20)	(22)
Change in certain asset and liability accounts (net of acquisitions):
Receivables	(363)	(273)
Inventories	(178)	(109)
Other current assets	(33)	(33)
Accounts payable and accrued liabilities	235	(39)
Noncurrent assets	(24)	(45)
Noncurrent liabilities	(29)	14
Taxes and interest payable	91	74
Other	12	2
Cash from (used for) operating activities - continuing operations	130	(132)
Cash from operating activities - discontinued operations	33	43
Cash from (used for) operating activities	163	(89)
Investing activities:
Capital expenditures	(103)	(63)
Business acquisitions, net of cash balances acquired	(22)	0
Proceeds from separation and merger of commodity chemicals business, net	0	940
Proceeds from the disposition of PPG's interest in the Transitions Optical joint venture and sunlens businesses (proceeds of $1,735, net of $110 cash divested)	1,625	0
Purchase of short-term investments	(132)	(225)
Payments on cross currency swap contracts	(45)	(42)
Proceeds from Hedge, Investing Activities	19	19
Proceeds from cross currency swap contracts	250	987
Other	4	0
Cash from investing activities - continuing operations	1,596	1,616
Cash used for investing activities - discontinued operations	(1)	(2)
Cash from investing activities	1,595	1,614
Financing activities:
Net change in borrowing with maturities of three months or less	(10)	6
Proceeds from the issuance of debt	2	0
Repayment of debt	(2)	(600)
Settlement of forward starting swaps	0	(1)
Purchase of treasury stock	(200)	(140)
Issuance of treasury stock	35	32
Dividends paid on PPG common stock	(85)	(84)
Other	(3)	4
Cash used for financing activities - continuing operations	(263)	(783)
Cash used for financing activities - discontinued operations	(40)	(17)
Cash used for financing activities	(303)	(800)
Effect of currency exchange rate changes on cash and cash equivalents	(12)	(10)
Net increase in cash and cash equivalents	1,443	715
Cash and cash equivalents, beginning of period	1,116	1,306
Cash and cash equivalents, end of period	2,559	2,021
Supplemental disclosures of cash flow information:
Interest paid, net of amount capitalized	53	66
Taxes paid, net of refunds	$ 59	$ 57