Inventories (Tables)
 6 Months Ended
Mar. 31, 2015
Inventories [Abstract]  
Schedule of Inventory
31 March30 September
20152014
Finished goods$ 509.2 $ 493.9
Work in process 36.3 34.1
Raw materials, supplies and other 259.4 283.4
$ 804.9 $ 811.4
Less: Excess of FIFO cost over LIFO cost(111.6)(105.4)
Inventories$ 693.3 $ 706.0