Commitments and Contingencies - Guarantees (Details) $ in Millions	Jun. 30, 2021 USD ($)
Commitments and Contingencies Disclosure [Line Items]
Maximum Potential Amount of Future Fundings	$ 267
Recorded Liability for Guarantees	130
Guarantees not in effect until underlying properties open	92
Debt service
Commitments and Contingencies Disclosure [Line Items]
Maximum Potential Amount of Future Fundings	53
Recorded Liability for Guarantees	7
Operating profit
Commitments and Contingencies Disclosure [Line Items]
Maximum Potential Amount of Future Fundings	196
Recorded Liability for Guarantees	119
Other
Commitments and Contingencies Disclosure [Line Items]
Maximum Potential Amount of Future Fundings	18
Recorded Liability for Guarantees	$ 4