Commitments and Contingencies - Segments, Credit Enhancement (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Credit Enhancement Guarantee
Third party debt collateralized by facilities, debt amount (maturing in May 1, 2025)	$ 105
Third party debt collateralized by facilities, asset carrying amount (maturing in May 1, 2025)	$ 370

The carrying value of facilities owned by the entity that are collateral for third party debt.

No definition available.

Name:	hcp_ThirdPartyDebtCollateralizedByFacilitiesAssetCarryingAmount
Namespace Prefix:	hcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant