Share Owners' Equity -Authorization of Common Stock (Details) - $ / shares	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Authorization of common stock
Shares of common stock authorized	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)	186,084,000	185,568,000	186,936,000
Treasury shares	31,024,000	30,880,000	31,220,000