Acquisition of Advanced Disposal - Intangible Allocation (Detail) - Advanced Disposal [Member] - USD ($) $ in Millions	Oct. 30, 2020	Sep. 30, 2021
Intangible assets
Other intangible assets		$ 601
Other Intangible Assets [Member]
Intangible assets
Other intangible assets		29
Weighted average amortization periods	7 years
Customer Relationships [Member]
Intangible assets
Other intangible assets		$ 572
Weighted average amortization periods	15 years

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
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- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
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- Definition

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+ References

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