Reconciliation of Assets from Segment to Consolidated (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	$ 7,538	$ 7,326	$ 7,445
Real Estate Franchise Services
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	4,592	4,606
Company Owned Real Estate Brokerage Services
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	1,032	914
Relocation Services
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	1,165	1,174
Title and Settlement Services
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	311	320
Corporate and Other
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	$ 438	$ 312