Capital Stock - Schedule of Common Shares Reserved for Future Issuance (Details) shares in Millions |
Jun. 30, 2025
shares
|
|---|---|
| Common Shares Reserved For Future Issuance [Line Items] | |
| Shares reserved for future issuance (in shares) | 54.4 |
| Stock options and share appreciation rights (SARs) outstanding | |
| Common Shares Reserved For Future Issuance [Line Items] | |
| Shares reserved for future issuance (in shares) | 17.1 |
| Restricted share units — unvested | |
| Common Shares Reserved For Future Issuance [Line Items] | |
| Shares reserved for future issuance (in shares) | 10.0 |
| Common shares available for future issuance | |
| Common Shares Reserved For Future Issuance [Line Items] | |
| Shares reserved for future issuance (in shares) | 27.3 |