|
Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2015
Hotel
|
Dec. 31, 2014
Hotel
|
|---|---|---|
| Variable Interest Entity [Line Items] | ||
| Total number of hotels in which company has variable interest entity | 21 | 21 |
| Loans to owners | $ 27 | |
| Unfunded loan commitments expected to be funded in total | 93 | |
| Unfunded loan commitments to be funded in next twelve months | 39 | |
| Equity and other potential contributions associated with managed, franchised or joint venture properties | 174 | |
| Equity and other potential contributions associated with managed, franchised or joint venture properties expected to be funded within one year | 77 | |
| Surety bonds issued | 28 | |
| Reserve for claims | 6 | |
| Range of possible loss, minimum | 0 | |
| Range of possible loss, maximum | 20 | |
| VIEs 21 [Member] | ||
| Variable Interest Entity [Line Items] | ||
| Investment associated with VIEs | 104 | 106 |
| Loan balance with VIEs | $ 2 | 2 |