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Inventories
 3 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Inventories
Inventories

Inventories consisted of the following (in millions):
 
December 31,
 
September 30,
 
2017
 
2017
Raw materials
$
606.0

 
$
578.1

Partially finished products
347.3

 
336.6

Finished products
378.5

 
398.1

Inventories at FIFO cost
1,331.8

 
1,312.8

Less: Progress/performance-based payments on U.S. government contracts
(27.6
)
 
(31.6
)
          Excess of FIFO cost over LIFO cost
(84.3
)
 
(82.8
)
 
$
1,219.9

 
$
1,198.4



Title to all inventories related to U.S. government contracts, which provide for progress or performance-based payments, vests with the U.S. government to the extent of unliquidated progress or performance-based payments.