Note 6. Railcar Leasing and Management Services Group Selected Leasing Balance Sheet Information (Details) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents		$ 132.0		$ 166.2
Accounts receivable		199.0		260.1
Property, plant, and equipment, net (2)		7,003.4		7,110.6
Restricted cash		96.4		111.4
Other assets		295.2		396.2
Total assets		8,701.8		8,701.4
Debt, net		5,017.0		4,881.9
Deferred income taxes		1,047.5		798.3
Other liabilities		150.2		96.3
Total liabilities		6,685.8		6,322.5
Noncontrolling interest		277.2		348.8
Total Equity		1,738.8		2,030.1
Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets		8,710.1		9,228.1
Operating Segments [Member] | Railcar Leasing and Management Services Group [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents		3.5		1.8
Accounts receivable		90.4		82.6
Property, plant, and equipment, net (2)		7,422.2	[1]	7,605.6
Restricted cash		96.3		111.4
Other assets		39.7		211.2
Total assets		7,652.1		8,012.6
Accounts payable and accrued liabilities		172.3		145.3
Debt, net		4,568.8		4,359.1
Deferred income taxes		1,063.4		862.8
Other liabilities		25.7		32.7
Total liabilities		5,830.2		5,399.9
Noncontrolling interest		277.2		348.8
Total Equity		1,544.7		2,263.9
Intersegment Eliminations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Property, plant, and equipment, net (2)		(820.3)		(903.8)
Wholly Owned Subsidiaries [Member] | Operating Segments [Member] | Railcar Leasing and Management Services Group [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents		3.5		1.8
Accounts receivable		82.0		73.9
Property, plant, and equipment, net (2)		5,795.9	[1]	5,818.9
Restricted cash		65.2		78.4
Other assets		38.1		209.8
Total assets		5,984.7		6,182.8
Accounts payable and accrued liabilities		141.4		100.7
Debt, net		3,340.5		3,080.7
Deferred income taxes		1,062.3		861.7
Other liabilities		25.7		32.7
Total liabilities		4,569.9		4,075.8
Noncontrolling interest		0.0		0.0
Total Equity		1,414.8		2,107.0
Partially-Owned Subsidiaries [Member] | Operating Segments [Member] | Railcar Leasing and Management Services Group [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents		0.0		0.0
Accounts receivable		8.4		8.7
Property, plant, and equipment, net (2)		1,626.3	[1]	1,786.7
Restricted cash		31.1		33.0
Other assets		1.6		1.4
Total assets		1,667.4		1,829.8
Accounts payable and accrued liabilities		30.9		44.6
Debt, net		1,228.3		1,278.4
Deferred income taxes		1.1		1.1
Other liabilities		0.0		0.0
Total liabilities		1,260.3		1,324.1
Noncontrolling interest		277.2		348.8
Total Equity		129.9		156.9
Consolidated Subsidiaries, Leasing [Member] | Intersegment Eliminations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents		0.0		0.0
Accounts receivable		0.0		0.0
Property, plant, and equipment, net (2)	[2]	(820.3)	[1]	(903.8)
Restricted cash		0.0		0.0
Other assets		0.0		0.0
Total assets	[2]	(820.3)		(903.8)
Accounts payable and accrued liabilities		0.0		0.0
Debt, net		0.0		0.0
Deferred income taxes	[2]	(186.2)		(184.8)
Other liabilities		0.0		0.0
Total liabilities	[2]	(186.2)		(184.8)
Noncontrolling interest		0.0		0.0
Total Equity	[2]	(634.1)		(719.0)
Railcar Leasing and Management Services Group [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents		3.5		1.8
Accounts receivable		90.4		82.6
Property, plant, and equipment, net (2)		6,601.9	[1]	6,701.8
Restricted cash		96.3		111.4
Other assets		39.7		211.2
Total assets		6,831.8		7,108.8
Accounts payable and accrued liabilities		172.3		145.3
Debt, net		4,568.8		4,359.1
Deferred income taxes		877.2		678.0
Other liabilities		25.7		32.7
Total liabilities		5,644.0		5,215.1
Noncontrolling interest		277.2		348.8
Total Equity		$ 910.6		$ 1,544.9

[1] See Note 11 for further information regarding impairment of long-lived assets recorded in the year ended December 31, 2020

[2] Net deferred profit on railcars sold to the Leasing Group consists of intersegment profit that is eliminated in consolidation. Net deferred profit and the related deferred tax impact are included as adjustments to the property, plant, and equipment, net and deferred income taxes line items, respectively, in the Eliminations – Lease Subsidiary column above to reflect the net book value of the railcars purchased by the Leasing Group from the Rail Products Group based on manufacturing cost. See Note 5 and Note 8 for a further discussion regarding our investment in our partially-owned leasing subsidiaries and the related indebtedness.