Share Owners' Equity -Authorization of Common Stock (Details) - $ / shares	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Authorization of common stock
Shares of common stock issued (including treasury shares)	250,000,000	250,000,000	250,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Shares of common stock issued (including treasury shares)	186,417,000	185,568,000	187,617,000
Treasury shares	31,143,000	30,880,000	31,401,000