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Derivative, Number of Settlements

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Derivative Financial Instruments and Hedging (Details) $ in Millions	3 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2020 USD ($)
Derivatives, Fair Value
Losses reclassified to net earnings	$ 0.5	$ 7.2
Accumulated Other Comprehensive Income, Remaining Net Loss to be Amortized	8.9		$ 9.4
Assets, Total
Derivatives, Fair Value
Derivative Asset, Fair Value, Gross Asset	25.6		14.7
Liabilities, Total
Derivatives, Fair Value
Derivative Liability, Fair Value, Gross Liability	493.4		543.1
Commodity contracts \| Other Current Assets
Derivatives, Fair Value
Derivative Asset, Fair Value, Gross Asset	6.6		5.0
Commodity contracts \| Other Assets
Derivatives, Fair Value
Derivative Asset, Fair Value, Gross Asset	5.9		0.1
Commodity contracts \| Other Current Liabilities
Derivatives, Fair Value
Derivative Liability, Fair Value, Gross Liability	0.9		1.4
Commodity contracts \| Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value
Notional Amount of Derivative	36.9		24.7
Energy Contracts \| Other Current Assets
Derivatives, Fair Value
Derivative Asset, Fair Value, Gross Asset	1.6		1.8
Energy Contracts \| Other Assets
Derivatives, Fair Value
Derivative Asset, Fair Value, Gross Asset	1.7		0.9
Energy Contracts \| Other Current Liabilities
Derivatives, Fair Value
Derivative Liability, Fair Value, Gross Liability	3.8		10.1
Energy Contracts \| Other Liabilities
Derivatives, Fair Value
Derivative Liability, Fair Value, Gross Liability	0.9		3.9
Energy Contracts \| Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value
Notional Amount of Derivative	76.0		87.1
Foreign Exchange Contract - Forward Contracts \| Other Current Assets
Derivatives, Fair Value
Derivative Asset, Fair Value, Gross Asset	0.0		0.1
Foreign Exchange Contract - Forward Contracts \| Other Current Liabilities
Derivatives, Fair Value
Derivative Liability, Fair Value, Gross Liability	1.4		0.0
Foreign Exchange Contract - Forward Contracts \| Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value
Notional Amount of Derivative	39.0		28.9
Interest Rate Swap \| Other Current Assets
Derivatives, Fair Value
Derivative Asset, Fair Value, Gross Asset	2.1		6.8
Interest Rate Swap \| Other Assets
Derivatives, Fair Value
Derivative Asset, Fair Value, Gross Asset	7.7		0.0
Interest Rate Swap \| Other Current Liabilities
Derivatives, Fair Value
Derivative Liability, Fair Value, Gross Liability	164.1		176.4
Interest Rate Swap \| Other Liabilities
Derivatives, Fair Value
Derivative Liability, Fair Value, Gross Liability	322.3		351.3
Interest Rate Swap \| Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value
Notional Amount of Derivative	621.3		621.7
Interest Rate Swap \| Derivatives Not Designated as Hedging Instruments \| Interest expense, net
Derivatives, Fair Value
Losses reclassified to net earnings	$ 7.2
Interest rate swap, rate lock swaps \| Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value
Derivative, Number of Settlements	9
Notional Amount of Derivative	$ 1,666.0		1,666.0
Interest rate swap, options \| Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value
Notional Amount of Derivative	$ 433.3		$ 433.3