Acquisitions And Discontinued Operations [Line Items]

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

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- Definition

Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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- Definition

Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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- Definition

This element represents the cash inflow during the period from the sale of a component of the entity.

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Acquisitions and Divestitures - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2016
Acquisitions And Discontinued Operations [Line Items]
Cash paid for business acquisition				$ 13	$ 15
Goodwill, Acquired During Period				9
Proceeds from business divestitures, net of cash divested				6	2,114
Reduction in goodwill related to business divestitures				1
Purchase price, net of cash acquired	$ 13
Scott Safety business [Member]
Acquisitions And Discontinued Operations [Line Items]
Proceeds from business divestitures, net of cash divested			$ 2,000
Reduction in goodwill related to business divestitures			1,200
Gain on sale of Scott Safety business			114
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			84
Business Divestitures, Not Specific [Member]
Acquisitions And Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses				18
Proceeds from business divestitures, net of cash divested				6
Global Products \| Business Divestitures, Not Specific [Member]
Acquisitions And Discontinued Operations [Line Items]
Proceeds from business divestitures, net of cash divested		$ 103
Reduction in goodwill related to business divestitures		$ 20
Global Products \| Individually Immaterial Acquisitions
Acquisitions And Discontinued Operations [Line Items]
Cash paid for business acquisition					15
Goodwill, Acquired During Period	$ 9				$ 8
Building Solutions EMEA/LA \| Business Divestitures, Not Specific [Member]
Acquisitions And Discontinued Operations [Line Items]
Reduction in goodwill related to business divestitures				$ 1
Tyco International Holding S.a.r.L. (TSarL) [Member]
Acquisitions And Discontinued Operations [Line Items]
Repayments of Debt			$ 1,900
Long-term Debt						$ 4,000