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Supplemental Disclosures of Cash Flow Information - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items] |  |  |
AMT credit and other U.S. federal refunds | $ (28.5) | $ (20.0) | $ (63.6)
Tax-payment deferrals | 20.0 |  |
Tax returns | $ 106.0 |  |
Qualified Contributory Savings and Thrift 401(k) Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Matching contributions by employer, percentage | 100.00% |  |
Percentage of eligible compensation for matching contributions by employer | 5.00% |  |
Matching contributions vesting schedule | 5 years |  |
Contribution expense to plan | $ 65.7 | 63.6 | 59.4
Employer match on eligible compensation | 5.00% |  |
Increased net cash provided by operating activities |  | 54.6 | 71.9
Increased net cash used by investing activities |  | $ 54.6 | $ 71.9

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- Definition Amount, before allocation of valuation allowances, of deferred tax asset attributable to deductible differences from reserves and accruals, compensation and benefit costs, and other provisions, reserves, and allowances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319 + Details
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