Note 17. Selected Quarterly Financial Data Selected Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues	$ 850.7	$ 813.6	$ 736.0	$ 604.8	$ 735.0	$ 606.9	$ 634.0	$ 533.2	$ 3,005.1	$ 2,509.1	$ 2,397.4
Cost of Goods and Services Sold	674.7	649.1	578.5	463.4	590.5	466.5	481.9	399.9	2,365.7	1,938.8	1,775.2
Selling, General and Administrative Expense	71.3	62.1	69.8	59.6	72.0	75.6	75.6	73.4	262.8	296.6	339.3
Gain (Loss) on Disposition of Property Plant Equipment	7.2	17.9	19.3	10.0	17.3	10.4	11.5	2.2	54.4	41.4	85.4
Restructuring Charges	14.7	0.0	0.0	0.0					14.7	0.0	0.0
Operating Income (Loss)	97.2	120.3	107.0	91.8	89.8	75.2	88.0	62.1	416.3	315.1	368.3
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	42.6	66.3	51.7	40.1	45.7	35.2	49.8	20.9	200.7	151.6	195.4
Income Tax Expense (Benefit)	20.3	18.2	14.1	8.9	17.7	6.7	12.5	5.7	61.5	42.6	(414.8)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	22.3	48.1	37.6	31.2	28.0	28.5	37.3	15.2	139.2	109.0	610.2
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(0.8)	(0.4)	(0.8)	(1.1)	(0.3)	(0.2)	28.2	26.4	(3.1)	54.1	103.4
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	21.5	47.7	36.8	30.1	27.7	28.3	65.5	41.6	136.1	163.1	713.6
Net Income (Loss) Attributable to Noncontrolling Interest	(0.1)	(1.3)	0.4	(0.5)	0.4	0.6	1.4	1.4	(1.5)	3.8	11.1
Net Income (Loss) Attributable to Parent	$ 21.6	$ 49.0	$ 36.4	$ 30.6	$ 27.3	$ 27.7	$ 64.1	$ 40.2	$ 137.6	$ 159.3	$ 702.5
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.18	$ 0.39	$ 0.29	$ 0.24	$ 0.20	$ 0.19	$ 0.24	$ 0.09	$ 1.11	$ 0.72	$ 3.94
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	(0.01)	0	(0.01)	(0.01)	0	0	0.19	0.18	(0.02)	0.37	0.68
Earnings Per Share, Basic	0.17	0.39	0.28	0.23	0.20	0.19	0.43	0.27	1.09	1.09	4.62
Income (Loss) from Continuing Operations, Per Diluted Share	0.18	0.39	0.29	0.24	0.19	0.19	0.24	0.09	1.09	0.70	3.85
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	(0.01)	0	(0.01)	(0.01)	0	0	0.19	0.17	(0.02)	0.37	0.67
Earnings Per Share, Diluted	$ 0.17	$ 0.39	$ 0.28	$ 0.23	$ 0.19	$ 0.19	$ 0.43	$ 0.26	$ 1.07	$ 1.07	$ 4.52
Non-recurring Tax Charge	$ 9.7
Manufacturing [Member]
Revenues	537.7	$ 487.4	$ 459.1	$ 404.6	$ 507.7	$ 379.7	$ 420.8	$ 358.9	$ 1,888.8	$ 1,667.1	$ 1,555.2
Cost of Goods and Services Sold	467.6	430.7	399.6	351.6	456.4	333.5	363.4	306.5	1,649.5	1,459.8	1,342.8
Selling, General and Administrative Expense									105.3	96.4	113.6
Leasing [Member]
Revenues	313.0	326.2	276.9	200.2	227.3	227.2	213.2	174.3	1,116.3	842.0	842.2
Cost of Goods and Services Sold	$ 207.1	$ 218.4	$ 178.9	$ 111.8	$ 134.1	$ 133.0	$ 118.5	$ 93.4	716.2	479.0	432.4
Selling, General and Administrative Expense									$ 49.5	$ 51.1	$ 50.7