Debt and Line of Credit - Schedule of Debt (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Secured debt	$ 3,373.0	$ 3,217.8
Weighted Average Years to Maturity	7 years 1 month 6 days	7 years 4 months 24 days
Weighted Average Interest Rates	4.024%	3.746%
Unsecured debt	$ 4,241.0	$ 3,979.4
Total debt	7,614.0	7,197.2
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit and other	2,002.9	2,130.6
Deferred financing costs	$ (2.3)	$ (3.0)
Secured Debt
Debt Instrument [Line Items]
Weighted Average Years to Maturity	9 years 6 months	10 years 2 months 12 days
Weighted Average Interest Rates	3.811%	3.723%
Net debt discount (premium)	$ 0.1	$ 0.1
Deferred financing costs	$ (15.7)	$ (14.6)
Senior Unsecured Notes
Debt Instrument [Line Items]
Weighted Average Years to Maturity	8 years	8 years 1 month 6 days
Weighted Average Interest Rates	3.375%	2.90%
Unsecured debt	$ 2,176.2	$ 1,779.6
Net debt discount (premium)	6.9	6.1
Deferred financing costs	$ (16.9)	$ (14.3)
Line of Credit and Other Debt | Revolving Credit Facility
Debt Instrument [Line Items]
Weighted Average Years to Maturity	2 years 2 months 12 days	2 years 9 months 18 days
Weighted Average Interest Rates	5.021%	4.417%
Preferred equity - Sun NG Resorts - mandatorily redeemable
Debt Instrument [Line Items]
Weighted Average Years to Maturity	1 year 3 months 18 days	1 year 9 months 18 days
Weighted Average Interest Rates	6.00%	6.00%
Preferred OP units - mandatorily redeemable	$ 35.2	$ 35.2
Preferred OP units - mandatorily redeemable
Debt Instrument [Line Items]
Weighted Average Years to Maturity	6 months	3 years 1 month 6 days
Weighted Average Interest Rates	6.50%	5.921%
Preferred OP units - mandatorily redeemable	$ 26.7	$ 34.0