The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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No definition available.

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Aggregate value of stock related to Restricted Stock Awards issued during the period.

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-Name Accounting Standards Codification
-Topic 505
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-Section S99
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Share Based Compensation (Summary Of Activity Of The RSUs Granted) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Time-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.2
Grants, Weighted Average Grant Date Fair Value	$ 96.25
Grants, Fair Value at Grant Date	$ 20.1
Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.2
Grants, Weighted Average Grant Date Fair Value	$ 108.87
Grants, Fair Value at Grant Date	$ 25.8
Performance-Based RSUs [Member] \| Vesting In Less Than 24 Months [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.1
Grants, Weighted Average Grant Date Fair Value	$ 108.33
Grants, Fair Value at Grant Date	$ 13.2
Performance-Based RSUs [Member] \| Vesting In More Than 24 Months [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.1
Grants, Weighted Average Grant Date Fair Value	$ 109.45
Grants, Fair Value at Grant Date	$ 12.6
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.4	0.7	0.6
Grants, Weighted Average Grant Date Fair Value	$ 102.96	$ 127.00	$ 94.88
Grants, Fair Value at Grant Date	$ 45.9	$ 88.4	$ 56.0
SB/RH [Member] \| Time-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.2
Grants, Weighted Average Grant Date Fair Value	$ 95.65
Grants, Fair Value at Grant Date	$ 18.6
SB/RH [Member] \| Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.2
Grants, Weighted Average Grant Date Fair Value	$ 108.87
Grants, Fair Value at Grant Date	$ 25.8
SB/RH [Member] \| Performance-Based RSUs [Member] \| Vesting In Less Than 24 Months [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.1
Grants, Weighted Average Grant Date Fair Value	$ 108.33
Grants, Fair Value at Grant Date	$ 13.2
SB/RH [Member] \| Performance-Based RSUs [Member] \| Vesting In More Than 24 Months [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.1
Grants, Weighted Average Grant Date Fair Value	$ 109.45
Grants, Fair Value at Grant Date	$ 12.6
SB/RH [Member] \| Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants, Shares	0.4	0.7	0.6
Grants, Weighted Average Grant Date Fair Value	$ 102.92	$ 126.85	$ 95.00
Grants, Fair Value at Grant Date	$ 44.4	$ 86.9	$ 54.1