Accounts Payable, Accrued, and Other Liabilities (Detail) - Other Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Non-current deferred revenue	$ 5,508		$ 4,572
Interest rate swap liabilities	10,017		9,891
Long-term taxes payable	16,760		20,141
Deferred rent (1)	19,586	[1]	21,046	[1]
Benefit plan-related liabilities	54,779		47,326
Other	22,954		23,975
Total other liabilities	$ 129,604		$ 126,951

[1] Represents the remaining unamortized long-term deferred rent on the $25.0 million tenant improvement allowance on the Company's Stamford headquarters facility. See Note 1 - Business and Significant Accounting Policies above for additional information.