Restructuring Actions (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 9.0
Floor Products Europe [Member]
Restructuring Cost and Reserve [Line Items]
Other related costs		6.7
Expenses incurred to date	29.3
North America SG&A [Member]
Restructuring Cost and Reserve [Line Items]
Expenses incurred to date	7.2
Beaver Falls Plant [Member]
Restructuring Cost and Reserve [Line Items]
Expenses incurred to date	25.1
Cost Of Goods Sold [Member] | Floor Products Europe [Member]
Restructuring Cost and Reserve [Line Items]
Other related costs		5.2
Cost Of Goods Sold [Member] | Beaver Falls Plant [Member]
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation		6.6
Closure-related costs		4.8
SG&A Expense [Member] | Floor Products Europe [Member]
Restructuring Cost and Reserve [Line Items]
Other related costs		1.5
SG&A Expense [Member] | Beaver Falls Plant [Member]
Restructuring Cost and Reserve [Line Items]
Net gain on sale of plant		0.7
Unallocated Corporate [Member] | North America SG&A [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0.9
Resilient Flooring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		6.8
Resilient Flooring [Member] | Floor Products Europe [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		6.4
Resilient Flooring [Member] | North America SG&A [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0.4
Building Products [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1.5
Building Products [Member] | North America SG&A [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0.1
Building Products [Member] | Beaver Falls Plant [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 1.4