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Capital Stock - Narrative (Details) |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 12, 2022 $ / shares | Nov. 04, 2022 $ / shares | Apr. 30, 2022 shares | Sep. 30, 2022 USD ($) vote $ / shares shares | Jun. 30, 2022 $ / shares | Mar. 31, 2022 $ / shares | Dec. 31, 2021 $ / shares shares | Sep. 30, 2021 $ / shares | Jun. 30, 2021 $ / shares | Mar. 31, 2021 $ / shares | Sep. 30, 2022 USD ($) vote $ / shares shares | Dec. 31, 2021 $ / shares shares | May 31, 2022 USD ($) | May 31, 2021 USD ($)
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares, authorized (in shares) | shares |  |  |  | 233,333,000 |  |  | 233,333,000 |  |  |  | 233,333,000 | 233,333,000 |  |
Number of votes per share | vote |  |  |  | 1 |  |  |  |  |  |  | 1 |  |  |
Maximum percent of individual ownership |  |  |  | 9.50% |  |  |  |  |  |  | 9.50% |  |  |
Minimum number of votes per share for other shareholders under 9.5% shareholder provision | vote |  |  |  | 1 |  |  |  |  |  |  | 1 |  |  |
Quarterly cash dividends declared (in dollars per share) | $ / shares |  |  |  | $ 0.22 | $ 0.21 | $ 0.20 | $ 0.19 | $ 0.18 | $ 0.17 | $ 0.16 | $ 0.63 | $ 0.70 |  |
Quarterly cash dividends paid (in dollars per share) | $ / shares |  |  |  | $ 0.22 | $ 0.21 | $ 0.20 | $ 0.19 | $ 0.18 | $ 0.17 | $ 0.16 | $ 0.63 | $ 0.70 |  |
Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly cash dividends declared (in dollars per share) | $ / shares |  | $ 0.23 |  |  |  |  |  |  |  |  |  |  |  |
Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly cash dividends paid (in dollars per share) | $ / shares | $ 0.23 |  |  |  |  |  |  |  |  |  |  |  |  |
Share Repurchase Plan 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase approved amount | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000,000
Stock repurchased (in shares) | shares |  |  | 543,399 |  |  |  |  |  |  |  | 2,136,961 |  |  |
Shares acquired and cancelled | $ |  |  |  |  |  |  |  |  |  |  | $ 92,200,000 |  |  |
Share Repurchase Plan 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase approved amount | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000,000 |
Stock repurchased (in shares) | shares |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Remaining authorized repurchase amount | $ |  |  |  | $ 250,000,000 |  |  |  |  |  |  | $ 250,000,000 |  |  |

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