Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Name:	us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Subsequent Event (Detail) - USD ($) $ in Millions	Oct. 30, 2020	Jun. 24, 2020	Apr. 14, 2019
Advanced Disposal [Member]
Subsequent Event [Line Items]
Total consideration, net of cash acquired		$ 4,600.0	$ 4,900.0
Total debt assumed		$ 1,800.0	$ 1,900.0
Advanced Disposal [Member] \| Disposed of by Sale, Not Discontinued Operations [Member]
Subsequent Event [Line Items]
Divestiture consideration	$ 856.4
Subsequent Event [Member] \| Advanced Disposal [Member]
Subsequent Event [Line Items]
Divestiture consideration	856.4
Subsequent Event [Member] \| Advanced Disposal [Member]
Subsequent Event [Line Items]
Total consideration, net of cash acquired	4,600.0
Total debt assumed	1,800.0
Debt incurred for acquisition	$ 3,000.0