Discontinued Operations And Other Divestitures (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended		3 Months Ended		6 Months Ended	12 Months Ended	0 Months Ended		0 Months Ended	1 Months Ended
	Jul. 31, 2011	Feb. 28, 2011	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2011	Dec. 31, 2011	May 11, 2012 Coating Resins Segment	Jun. 30, 2012 Coating Resins Segment	May 11, 2012 Coating Resins Segment Working Capital	Feb. 28, 2011 Cash	Jun. 30, 2012 Promissory Note	Dec. 31, 2011 Promissory Note	Feb. 28, 2011 Promissory Note
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Expected proceeds from divestiture of businesses							$ 105.0		$ 15.0
Total assets held for sale								1,603.7
Total liabilities held for sale								447.3
Proceeds from sale of other assets		175.7
Proceeds from sale of closed facilities										160.7
Discontinued operations, consideration of sale of assets and liabilities													15
Debt instrument, maturity period												6 years
Interest rate of debt instrument, percentage											7.00%
Cash payment made as final settlement of working capital	6.6
Net realized consideration			169.1		169.1
Gain (loss)on sale of discontinued operations, after-tax			(2.2)		34.6	34.6
Gain on sale of assets				$ 3.3	$ 3.3