CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares shares in Millions |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Shareholders' Equity: | ||
| Common stock, par value (in dollars per share) | $ 1.00 | $ 1.00 |
| Common stock, authorized (in shares) | 240.0 | 240.0 |
| Common stock, issued (in shares) | 157.7 | 165.3 |
| Common stock, outstanding (in shares) | 157.7 | 165.3 |