Financial Instruments - Additional Information (Detail) $ in Millions	6 Months Ended
Jun. 30, 2022 USD ($) Customer	Jun. 30, 2021 Customer	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Long-term debt, carrying values	$ 5,044.3		$ 5,100.9
Long-term debt, fair values	$ 4,480.0		$ 5,450.0
Customer Concentration Risk \| Accounts Receivable
Debt Instrument [Line Items]
Number of customer accounted for 10% or more of consolidated accounts receivable \| Customer	0	0
Customer Concentration Risk \| Accounts Receivable \| Minimum
Debt Instrument [Line Items]
Percentage of concentration risk	10.00%	10.00%

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant