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Share-Based Compensation - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common shares authorized under 2014 Stock Incentive Plan | 24,800,000 |  |
Common shares remain for future issuance under share-based compensation plans | 2,600,000 |  |
Realized income tax benefit for all awards | $ 10,400,000 | $ 10,500,000 | $ 9,600,000
Excess tax benefits (expense) on share-based compensation arrangements | (600,000) | 3,500,000 | 3,100,000
Total vesting date fair value of stock units | $ 38,000,000.0 | $ 43,200,000 | $ 23,000,000.0
Reserved for issuance under employee stock purchase plan | 4,000,000.0 |  |
Future issuance of employee stock purchase plan | 2,900,000 |  |
Percent of fair market value for which eligible employees can purchase common shares under employee stock purchase plan | 85.00% |  |
Performance conditions [Member] | First Succeeding Year [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance stock unit awards vesting percentage | 20.00% |  |
Performance conditions [Member] | Second Succeeding Year [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance stock unit awards vesting percentage | 20.00% |  |
Performance conditions [Member] | Third Succeeding Year [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance stock unit awards vesting percentage | 60.00% |  |
Chief Executive Officer [Member] | Performance conditions [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance stock unit awards vesting date | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Stock options and SARs [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Contractual term | 10 years |  |
SARs [Member] | Performance conditions [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Awards granted | 0 | 0 |
SARs [Member] | Performance conditions [Member] | First Succeeding Year [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Awards granted |  |  | 0
SARs [Member] | Service condition [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Awards granted |  | 0 | 0
SARs [Member] | Stock Incentive Plan Other [Member] | Performance conditions [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period beginning from the grant date | 3 years |  |
Service condition awards [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense (benefit) | $ 44,500,000 | $ 43,600,000 | $ 38,300,000
Unrecognized compensation cost on non-vested stock awards | $ 75,400,000 |  |
Unrecognized compensation cost on non-vested stock awards, weighted-average period of recognition | 1 year 7 months 6 days |  |
Total intrinsic value of awards exercised for options and SARs | $ 400,000 | 19,100,000 | 28,000,000.0
Performance condition awards [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense (benefit) | (100,000) | 10,500,000 | 12,700,000
Unrecognized compensation cost on non-vested stock awards | $ 3,600,000 |  |
Unrecognized compensation cost on non-vested stock awards, weighted-average period of recognition | 1 year 7 months 6 days |  |
Total intrinsic value of awards exercised for options and SARs | $ 100,000 | $ 6,500,000 | $ 28,800,000
Performance condition awards [Member] | Independent Director Stock Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period beginning from the grant date | 1 year |  |
Performance condition awards [Member] | Chief Executive Officer [Member] | Minimum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance stock unit awards vesting percentage | 0.00% | 0.00% | 0.00%
Performance condition awards [Member] | Chief Executive Officer [Member] | Maximum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance stock unit awards vesting percentage | 200.00% | 200.00% | 200.00%
Market condition awards [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total intrinsic value of awards exercised for options and SARs | $ 0 | $ 1,100,000 | $ 0
Management Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Additional awards | 0 |  |
2004 Stock Incentive Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Additional awards | 0 |  |
2005 Stock Incentive Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Additional awards | 0 |  |
Stock Incentive Plan [Member] | Performance condition awards [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period beginning from the grant date | 3 years |  |
Contractual term | 3 years |  |

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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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