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Debt - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Real estate related
Debt Instrument [Line Items]
Borrowings outstanding	$ 382.9
U.S. Notes
Debt Instrument [Line Items]
Borrowings outstanding	315.1
U.K. Notes
Debt Instrument [Line Items]
Borrowings outstanding	65.8
Brazil Note
Debt Instrument [Line Items]
Borrowings outstanding	$ 2.0
5.00% Senior Notes
Debt Instrument [Line Items]
Interest rate (as a percentage)	5.00%
5.25% Senior Notes
Debt Instrument [Line Items]
Interest rate (as a percentage)	5.25%
Acquisition Line
Debt Instrument [Line Items]
Acquisition line	$ 49.2	$ 31.8
Interest rate (as a percentage)	1.95%
Minimum | U.S. Notes
Debt Instrument [Line Items]
Interest rate (as a percentage)	3.25%
Basis spread on variable rate (as a percentage)	1.45%
Maximum | U.S. Notes
Debt Instrument [Line Items]
Interest rate (as a percentage)	4.69%
Basis spread on variable rate (as a percentage)	2.10%

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The effective interest rate at the end of the reporting period.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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