Note 16. Financial Statements for Guarantors of Senior Notes Financial Statements for Guarantors of Senior Notes (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Guarantor Obligations [Line Items]
Restricted Cash and Cash Equivalents	$ 111.4	$ 171.6
Assets	8,701.4	7,989.2
Non-Guarantor Subsidiaries [Member] \| Reportable Legal Entities [Member]
Guarantor Obligations [Line Items]
Restricted Cash and Cash Equivalents	86.1	132.9
Assets	7,232.6	6,644.0
Secured Debt [Member] \| Non-Guarantor Subsidiaries [Member]
Guarantor Obligations [Line Items]
Debt Instrument, Collateral Amount	6,409.8	5,316.2
Capital Lease Obligations [Member] \| Non-Guarantor Subsidiaries [Member]
Guarantor Obligations [Line Items]
Debt Instrument, Collateral Amount		67.5
Non-US [Member] \| Non-Guarantor Subsidiaries [Member]
Guarantor Obligations [Line Items]
Assets	$ 136.0	$ 116.0

Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 210
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-Subparagraph (SX 210.7-03(a)(2))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant