Contingencies - Guarantees (Details) In Millions, unless otherwise specified											3 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 Lease Obligations and Debt Securities Payable USD ($)	Sep. 30, 2013 Property Lease Guarantee ExecuStay USD ($)	Sep. 30, 2013 Primary Obligor USD ($)	Sep. 30, 2013 Primary Obligor Debt service USD ($)	Sep. 30, 2013 Primary Obligor Operating profit USD ($)	Sep. 30, 2013 Primary Obligor Not Yet In Effect Condition Debt service USD ($)	Sep. 30, 2013 Primary Obligor Not Yet In Effect Condition Operating profit USD ($)	Sep. 30, 2013 Primary Obligor Not Yet In Effect Condition Other guarantees USD ($)	Sep. 30, 2013 Secondarily Liable USD ($)	Mar. 31, 2013 Secondarily Liable Sunrise Senior Living Inc USD ($)	Dec. 30, 2011 Secondarily Liable Sunrise Senior Living Inc USD ($)	Sep. 30, 2013 Secondarily Liable MVW Spin-off USD ($)	Sep. 30, 2013 Secondarily Liable MVW Spin-off Expiration in 2013 USD ($)	Sep. 30, 2013 Secondarily Liable MVW Spin-off Expiration in 2014 USD ($)	Sep. 30, 2013 Secondarily Liable MVW Spin-off Expiration in 2020 USD ($)	Sep. 30, 2013 Secondarily Liable MVW Spin-off Expiration in 2022 USD ($)	Sep. 30, 2013 Secondarily Liable MVW Spin-off Expiration in 2022 SGD	Sep. 30, 2013 Secondarily Liable Property Lease Guarantee Sunrise Senior Living Inc USD ($)	Dec. 30, 2011 Secondarily Liable Property Lease Guarantee Sunrise Senior Living Inc USD ($)	Dec. 30, 2011 Secondarily Liable Property Lease Guarantee Sunrise Senior Living Inc Key Bank Letter of Credit USD ($)	Sep. 30, 2013 Secondarily Liable Property Lease Guarantee Renaissance Hotel Group N.V. USD ($)	Sep. 30, 2013 Secondarily Liable Property Lease Guarantee Renaissance Hotel Group N.V. EUR (€)	Sep. 09, 2005 Secondarily Liable Property Lease Guarantee Renaissance Hotel Group N.V. EUR (€)	Sep. 30, 2013 Secondarily Liable Property Lease Guarantee Accenture USD ($) lease	Sep. 30, 2013 Secondarily Liable Debt Securities Payable USD ($)	Sep. 30, 2013 Secondarily Liable Debt Securities Payable Sunrise Senior Living Inc USD ($)	Sep. 30, 2013 Secondarily Liable Debt Securities Payable CNL Retirement Properties Inc USD ($)	Sep. 30, 2013 Secondarily Liable Debt Securities Payable Five Star Senior Living USD ($)	Sep. 30, 2013 Secondarily Liable Lease is Terminated by End of 2013 Property Lease Guarantee ExecuStay USD ($)	Sep. 30, 2013 Secondarily Liable Lease is Terminated After End of 2013 Property Lease Guarantee ExecuStay USD ($)	Sep. 30, 2013 Other Current Liabilities Primary Obligor USD ($)	Sep. 30, 2013 Other Long Term Liabilities Primary Obligor USD ($)
Commitments and Contingencies Disclosure [Line Items]
Funding guarantees, minimum term	4 years
Funding guarantees, maximum term	10 years
Liability for guarantees				$ 51	$ 6	$ 44																										$ 3	$ 48
Maximum potential amount of future fundings				197	76	105	13	5	1	106			22	1	5	3	13	17	78							28	4	23	1	11	6
Guarantee obligations, carrying value		3	1										2
Number of leases																									2
Cash collateral in the event funding is required												3
Length of operating lease extension																				5 years
Cash collateralized for lease guarantee for period from 2014 until 2018																				1
Letter of credit provided by Sunrise, amount available																					85
Collateral for continuing lease obligation contingency, future minimum annual payments due from 2014 until 2018																				1
Additional cash collateralized during the period for guarantee obligations											2
Annual rent payments, approximately																						6
Remaining rent payments, approximately																						36			7
Guarantee obligations, cash collateralized																						$ 5	€ 4	€ 35