Shareholders' Earnings per Share - Denominator for Basic and Diluted Earnings per Share (Details) - shares shares in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Earnings Per Share [Abstract] | ||||
| Denominator for basic shareholders' earnings per share – weighted-average shares (in shares) | 217.0 | 225.2 | 218.4 | 225.8 |
| Effect of dilutive securities – employee stock options, non-vested restricted stock awards and convertible debentures (in shares) | 0.9 | 0.6 | 0.7 | 0.7 |
| Denominator for diluted shareholders' earnings per share (in shares) | 217.9 | 225.8 | 219.1 | 226.5 |