Debt and Line of Credit- Narrative (Details) $ / shares in Units, £ in Millions		1 Months Ended		3 Months Ended						6 Months Ended		12 Months Ended
	Apr. 07, 2022 USD ($) extensionOption Rate	Oct. 31, 2019 USD ($) Rate	Jun. 30, 2018 USD ($)	Jun. 30, 2023 USD ($) site property $ / shares Rate	Mar. 31, 2023 property	Dec. 31, 2022 USD ($) site	Sep. 30, 2022	Jun. 30, 2022 USD ($)	Mar. 31, 2020 shares	Jun. 30, 2023 USD ($) site property shares $ / shares Rate	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) site Rate	Mar. 31, 2022 USD ($)	Mar. 31, 2022 GBP (£)	Jun. 14, 2021 USD ($)
Debt Instrument [Line Items]
Loan Amount				$ 3,400,000,000						$ 3,400,000,000
Sites, Wet Slips and Dry Storage Spaces | site				92		24,347				92		24,347
Loss on extinguishment of debt				$ 0				$ 100,000		$ 0	$ 400,000
Term (in years)							25 years
Margin adjustments | Rate				0.01%						0.01%
Preferred rate of return			6.00%
Convertible units to shares (in shares) | shares										988,819
Average closing price of units (in dollars per share)										$ 12,100,000	$ 17,600,000
Minimum
Debt Instrument [Line Items]
Term (in years)					7 years	4 years
Maximum
Debt Instrument [Line Items]
Term (in years)					10 years	7 years
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit and other				$ 2,002,900,000		$ 2,130,600,000				2,002,900,000		$ 2,130,600,000
Long-term debt				1,100,000,000		1,100,000,000				1,100,000,000		1,100,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, borrowing capacity	$ 4,200,000,000
Line of credit, additional borrowing capacity	$ 800,000,000
Number of credit facility extension options | extensionOption	2
Extension period for credit facility extension option	6 months
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Basis points | Rate	0.725%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Basis points | Rate	1.60%
Collateralized Mortgage Backed Securities
Debt Instrument [Line Items]
Number of properties jointly secured | property					1
Net book value				2,700,000,000						2,700,000,000
Revolving Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit and other				884,800,000		1,100,000,000				$ 884,800,000		1,100,000,000
Revolving Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, additional borrowing capacity															$ 1,000,000,000
Current borrowing capacity	$ 3,050,000,000.00														$ 2,000,000,000
Basis points | Rate										0.85%
Term Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, borrowing capacity				500,000,000						$ 500,000,000
Line of credit and other		$ 58,000,000
Term (in years)		4 years
Term Loan | Unsecured Term Loan Facility
Debt Instrument [Line Items]
Long-term debt				11,700,000		19,800,000				$ 11,700,000		$ 19,800,000
Term Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity	$ 1,150,000,000
Basis points | Rate										0.95%
Term Loan Adjustment | Revolving Credit Facility
Debt Instrument [Line Items]
Basis points | Rate										0.04%		0.01%
Line of Credit and Other Debt
Debt Instrument [Line Items]
Outstanding letters of credit				16,700,000		2,600,000				$ 16,700,000		$ 2,600,000
Line of Credit and Other Debt | Term Loan | Eurodollar
Debt Instrument [Line Items]
Basis points										0.95%
Line of Credit and Other Debt | Term Loan | Minimum | Eurodollar
Debt Instrument [Line Items]
Basis points | Rate										0.80%
Fixed Interest Rate | Rate		1.20%
Line of Credit and Other Debt | Term Loan | Maximum | Eurodollar
Debt Instrument [Line Items]
Basis points | Rate										1.60%
Fixed Interest Rate | Rate		2.05%
Bridge Loan
Debt Instrument [Line Items]
Principal Amount													$ 1,200,000,000	£ 950.0
Loss on extinguishment of debt												(300,000)
Preferred equity - Sun NG Resorts - mandatorily redeemable
Debt Instrument [Line Items]
Mandatorily redeemable preferred equity			$ 35,300,000
Term			7 years
Preferred OP units - mandatorily redeemable				35,200,000		35,200,000				$ 35,200,000		35,200,000
Preferred OP units - mandatorily redeemable
Debt Instrument [Line Items]
Preferred OP units - mandatorily redeemable				26,700,000		34,000,000.0				$ 26,700,000		34,000,000.0
Convertible units to shares (in shares) | shares									270,000
Preferred distribution rate | Rate										6.50%
Preferred OP units - mandatorily redeemable | Convertible debt - Aspen Preferred OP Units January 2024 [Member]
Debt Instrument [Line Items]
Principal Amount				$ 26,700,000		$ 34,000,000				$ 26,700,000		$ 34,000,000
Convertible units to shares (in shares) | shares										323,271
Average closing price of shares (in dollars per share) | $ / shares				$ 68.00						$ 68.00
Shares converted (in shares) | shares										0.397
Average closing price of units (in dollars per share)										$ 27.00
Percentage of overage closing price | Rate										25.00%
Preferred distribution rate | Rate										3.80%
Properties Securing Debt | Collateralized Mortgage Backed Securities
Debt Instrument [Line Items]
Number of properties jointly secured | property				154						154
Sites, Wet Slips and Dry Storage Spaces | site				61,629						61,629