Commitments And Contingencies (Schedule Of Settlement And Defense Costs) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Loss Contingencies [Line Items]
Pre-tax cash payments			$ 41.5	$ 36.2
Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Settlement / indemnity costs incurred (1)	$ 9.6	$ 4.6	25.3	21.3	$ 27.7
Defense costs incurred (1)	10.1	10.2	32.2	31.2	41.7
Gross Settlement And Defense Incurred Costs	19.7	14.7	57.5	52.5	69.4
Settlement / indemnity payments	14.4	8.4	28.0	19.5	24.5
Defense payments	10.6	9.7	31.0	30.4	43.5
Insurance receipts	(9.3)	(6.7)	(17.4)	(13.7)	(18.1)
Pre-tax cash payments	$ 15.8	$ 11.4	$ 41.5	$ 36.2	$ 49.9