Consolidating Guarantor Financial Information (Schedule of Consolidating Statements of Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating activities
Net cash provided by (used in) operating activities	$ 661	$ 481
Investing activities
Capital expenditures on property, plant and equipment	(270)	(241)
Acquisitions, net of cash acquired	(23)	(8)
Proceeds from sale of businesses and assets, net	1	6
Deferred proceeds from Kelsterbach plant relocation	0	158
Capital expenditures related to Kelsterbach plant relocation	(43)	(174)
Other, net	(62)	(37)
Net cash provided by (used in) investing activities	(397)	(296)
Financing activities
Short-term borrowings (repayments), net	(7)	(20)
Proceeds from long-term debt	0	411
Repayments of long-term debt	(32)	(562)
Refinancing costs	0	(8)
Proceeds and repayments from intercompany financing activities	0	0
Purchases of treasury stock, including related fees	(37)	(28)
Dividends from subsidiary	0	0
Dividends to parent	0	0
Contributions from parent to subsidiary	0	0
Stock option exercises	58	19
Series A common stock dividends	(31)	(25)
Preferred stock dividends	0	0
Other, net	28	(11)
Net cash provided by (used in) financing activities	(21)	(224)
Exchange rate effects on cash and cash equivalents	3	3
Net increase (decrease) in cash and cash equivalents	246	(36)
Cash and cash equivalents as of beginning of period	682	740
Cash and cash equivalents as of end of period	928	704
Parent Guarantor [Member]
Operating activities
Net cash provided by (used in) operating activities	(28)	(1)
Investing activities
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	0
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	0
Other, net	0	0
Net cash provided by (used in) investing activities	0	0
Financing activities
Short-term borrowings (repayments), net	0	0
Proceeds from long-term debt	0	0
Repayments of long-term debt	0	0
Refinancing costs	0	0
Proceeds and repayments from intercompany financing activities	0	0
Purchases of treasury stock, including related fees	(37)	(28)
Dividends from subsidiary	35	43
Dividends to parent	0	0
Contributions from parent to subsidiary	0	0
Stock option exercises	58	19
Series A common stock dividends	(31)	(25)
Preferred stock dividends	0	0
Other, net	29	(8)
Net cash provided by (used in) financing activities	54	1
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	26	0
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	26	0
Issuer [Member]
Operating activities
Net cash provided by (used in) operating activities	0	0
Investing activities
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	0
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	0
Other, net	0	0
Net cash provided by (used in) investing activities	0	0
Financing activities
Short-term borrowings (repayments), net	0	0
Proceeds from long-term debt	0	400
Repayments of long-term debt	(11)	(529)
Refinancing costs	0	(8)
Proceeds and repayments from intercompany financing activities	11	137
Purchases of treasury stock, including related fees	0	0
Dividends from subsidiary	35	143
Dividends to parent	(35)	(43)
Contributions from parent to subsidiary	0	(100)
Stock option exercises	0	0
Series A common stock dividends	0	0
Preferred stock dividends	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	0	0
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	0	0
Subsidiary Guarantors [Member]
Operating activities
Net cash provided by (used in) operating activities	307	224
Investing activities
Capital expenditures on property, plant and equipment	(132)	(105)
Acquisitions, net of cash acquired	(23)	(8)
Proceeds from sale of businesses and assets, net	1	1
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	0
Other, net	(9)	(3)
Net cash provided by (used in) investing activities	(163)	(115)
Financing activities
Short-term borrowings (repayments), net	2	(9)
Proceeds from long-term debt	0	0
Repayments of long-term debt	(5)	(2)
Refinancing costs	0	0
Proceeds and repayments from intercompany financing activities	(11)	(137)
Purchases of treasury stock, including related fees	0	0
Dividends from subsidiary	0	0
Dividends to parent	(35)	(43)
Contributions from parent to subsidiary	(3)	100
Stock option exercises	0	0
Series A common stock dividends	0	0
Preferred stock dividends	0	0
Other, net	0	(3)
Net cash provided by (used in) financing activities	(52)	(94)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	92	15
Cash and cash equivalents as of beginning of period	133	128
Cash and cash equivalents as of end of period	225	143
Non-Guarantors [Member]
Operating activities
Net cash provided by (used in) operating activities	382	258
Investing activities
Capital expenditures on property, plant and equipment	(138)	(136)
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	5
Deferred proceeds from Kelsterbach plant relocation	0	158
Capital expenditures related to Kelsterbach plant relocation	(43)	(174)
Other, net	(53)	(34)
Net cash provided by (used in) investing activities	(234)	(181)
Financing activities
Short-term borrowings (repayments), net	(9)	(11)
Proceeds from long-term debt	0	11
Repayments of long-term debt	(16)	(31)
Refinancing costs	0	0
Proceeds and repayments from intercompany financing activities	0	0
Purchases of treasury stock, including related fees	0	0
Dividends from subsidiary	0	0
Dividends to parent	0	(100)
Contributions from parent to subsidiary	3	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Preferred stock dividends	0	0
Other, net	(1)	0
Net cash provided by (used in) financing activities	(23)	(131)
Exchange rate effects on cash and cash equivalents	3	3
Net increase (decrease) in cash and cash equivalents	128	(51)
Cash and cash equivalents as of beginning of period	549	612
Cash and cash equivalents as of end of period	677	561
Eliminations [Member]
Operating activities
Net cash provided by (used in) operating activities	0	0
Investing activities
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	0
Deferred proceeds from Kelsterbach plant relocation	0	0
Capital expenditures related to Kelsterbach plant relocation	0	0
Other, net	0	0
Net cash provided by (used in) investing activities	0	0
Financing activities
Short-term borrowings (repayments), net	0	0
Proceeds from long-term debt	0	0
Repayments of long-term debt	0	0
Refinancing costs	0	0
Proceeds and repayments from intercompany financing activities	0	0
Purchases of treasury stock, including related fees	0	0
Dividends from subsidiary	(70)	(186)
Dividends to parent	70	186
Contributions from parent to subsidiary	0	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Preferred stock dividends	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	0	0
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	$ 0	$ 0