Segment Information (Schedule Of Revenue And Long-Lived Assets) (Details) - USD ($) $ in Millions	3 Months Ended																12 Months Ended
	Dec. 31, 2015		Sep. 30, 2015	[2]	Jun. 30, 2015	[3]	Mar. 31, 2015	[4]	Dec. 31, 2014		Sep. 30, 2014	[6]	Jun. 30, 2014	[7]	Mar. 31, 2014	[8]	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Sales:	$ 775.8	[1]	$ 841.6		$ 887.1		$ 873.1		$ 869.3	[5]	$ 958.4		$ 1,005.5		$ 1,002.3		$ 3,377.6	$ 3,835.5	$ 3,771.2
Long-lived assets:	583.5								596.7								583.5	596.7	646.2
Europe
Segment Reporting Information [Line Items]
Sales:																	430.1	511.8	519.7
Long-lived assets:	94.0								95.7								94.0	95.7	103.0
CANADA
Segment Reporting Information [Line Items]
Sales:																	241.3	277.4	267.8
Long-lived assets:	6.9								12.8								6.9	12.8	13.2
Asia
Segment Reporting Information [Line Items]
Sales:																	235.9	246.2	239.0
Long-lived assets:	40.2								39.5								40.2	39.5	51.8
MEXICO
Segment Reporting Information [Line Items]
Sales:																	209.7	178.4	158.1
Long-lived assets:	19.4								19.7								19.4	19.7	20.5
South America
Segment Reporting Information [Line Items]
Sales:																	15.7	31.3	48.4
Long-lived assets:	4.9								7.9								4.9	7.9	13.3
UNITED STATES
Segment Reporting Information [Line Items]
Sales:																	2,244.9	2,590.4	2,538.2
Long-lived assets:	$ 418.1								$ 421.1								$ 418.1	$ 421.1	$ 444.4

[1] Included for the fourth quarter 2015 are: 1) a mark-to-market pension and other post-retirement charge of $11.6 million, 2) employee separation and restructuring costs of $10.1 million and 3) $16.4 million of debt extinguishment costs primarily due to the repayment in full of $316.6 million aggregate principal amount of our 7.375% senior notes due 2020.

[2] Included for the third quarter 2015 are: 1) employee separation and restructuring costs of $13.7 million and 2) a $7.5 million benefit related to the reversal of an uncertain tax position due to the expiration of the statute of limitations.

[3] Included for the second quarter 2015 are: 1) employee separation and restructuring costs of $7.5 million and 2) a $26.0 million tax benefit as a result of amending U.S. federal income tax returns from 2005 to 2012 to use foreign tax credits.

[4] Included for the first quarter 2015 are employee separation and restructuring costs of $10.6 million.

[5] Included for the fourth quarter 2014 are: 1) a mark-to-market pension and other post-retirement charge of $56.5 million, 2) employee separation and restructuring costs of $23.2 million, 3) environmental remediation costs of $2.6 million and 5) a gain related to the reimbursement of previously incurred environmental costs of $2.1 million

[6] Included for the third quarter 2014 are: 1) employee separation and restructuring costs of $17.9 million, 2) environmental remediation costs of $5.9 million and 3) a gain related to the reimbursement of previously incurred environmental costs of

[7] Included for the second quarter 2014 are: 1) employee separation and restructuring costs of $35.1 million and 2) a $5.4 million tax benefit associated with our investments in certain foreign affiliates.

[8] Included for the first quarter 2014 are employee separation and restructuring costs of $17.9 million.