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Capital Stock - Dividends (Details) - $ / shares | 3 Months Ended
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Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023
O 2023 Q4 Dividends |  |  |
Dividends |  |  |
Dividend Declaration Date |  |  | Oct. 18, 2023
Dividend Payment Date |  |  | Jan. 15, 2024
O 2023 Q4 Dividends | Series A |  |  |
Dividends |  |  |
Cash dividend declared (in dollars per share) |  |  | $ 0.53906
O 2023 Q4 Dividends | Series B Depositary Shares |  |  |
Dividends |  |  |
Cash dividend declared (in dollars per share) |  |  | $ 0.52344
O 2024 Q1 Dividends |  |  |
Dividends |  |  |
Dividend Declaration Date |  | Feb. 21, 2024 |
Dividend Payment Date |  | Apr. 15, 2024 |
O 2024 Q1 Dividends | Series A |  |  |
Dividends |  |  |
Cash dividend declared (in dollars per share) |  | $ 0.53906 |
O 2024 Q1 Dividends | Series B Depositary Shares |  |  |
Dividends |  |  |
Cash dividend declared (in dollars per share) |  | $ 0.52344 |
O 2024 Q2 Dividends |  |  |
Dividends |  |  |
Dividend Declaration Date | May 15, 2024 |  |
Dividend Payment Date | Jul. 15, 2024 |  |
O 2024 Q2 Dividends | Series A |  |  |
Dividends |  |  |
Cash dividend declared (in dollars per share) | $ 0.53906 |  |
O 2024 Q2 Dividends | Series B Depositary Shares |  |  |
Dividends |  |  |
Cash dividend declared (in dollars per share) | $ 0.52344 |  |

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