Consolidated Statements of Equity (Parentheticals) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Treasury shares	0.2	0.2	0.2
Common Shares, $1.25 Par Value	$ 1.25	$ 1.25	$ 1.25