Commitments, Contingencies and Guarantees - Summary of Contractual Obligations (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Loss Contingencies [Line Items]
Total contractual obligations	$ 974,674
Total contractual obligations less than 1 year	95,423
Total contractual obligations 1-3 Years	422,447
Total contractual obligations 3-5 Years	66,518
Total contractual obligations more than 5 years	390,286
Operating Leases [Member]
Loss Contingencies [Line Items]
Total contractual obligations	237,569
Total contractual obligations less than 1 year	47,568
Total contractual obligations 1-3 Years	78,376
Total contractual obligations 3-5 Years	48,237
Total contractual obligations more than 5 years	63,388
Notes Payable and Collateralized Borrowings [Member]
Loss Contingencies [Line Items]
Total contractual obligations	424,109
Total contractual obligations less than 1 year	761
Total contractual obligations 1-3 Years	310,848
Total contractual obligations 3-5 Years
Total contractual obligations more than 5 years	112,500
Interest on Notes Payable [Member]
Loss Contingencies [Line Items]
Total contractual obligations	295,402
Total contractual obligations less than 1 year	29,500
Total contractual obligations 1-3 Years	33,223
Total contractual obligations 3-5 Years	18,281
Total contractual obligations more than 5 years	214,398
Other Contractual Obligations [Member]
Loss Contingencies [Line Items]
Total contractual obligations	17,594
Total contractual obligations less than 1 year	17,594
Total contractual obligations 1-3 Years
Total contractual obligations 3-5 Years
Total contractual obligations more than 5 years