Share Owners' Equity - Rollforward Shares (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Increase (Decrease) in Share Owners' Equity
Issuance of common stock (in shares)			50,000.00
Reissuance of common stock (in shares)	200,000	200,000	300,000	700,000
Shares repurchased (in shares)	619,666		1,000,000.0
Stock compensation (in shares)	0.0	100,000	600,000	900,000