Supplemental Information (Payables and Accrued Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Oct. 01, 2018	Sep. 30, 2018
Disclosure Text Block Supplement [Abstract]
Trade creditors	$ 519.3		$ 594.6
Payables associated with Lu'An	8.9		330.0
Contract liabilities	247.4	$ 174.5	156.6
Accrued payroll and employee benefits	186.1		201.4
Pension and postretirement benefits	26.0		34.1
Dividends payable	255.7		241.5
Derivative instruments	91.2		54.2
Obligation for future contribution to an equity affiliate	94.4		0.0
Other	206.7		205.4
Payables and accrued liabilities	$ 1,635.7		$ 1,817.8

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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