Aggregate Contractual Maturities of Indebtedness by Year (Detail) - USD ($) $ in Thousands		Jun. 30, 2016	Dec. 31, 2015
Extinguishment Of Debt [Line Items]
Total		$ 3,055,452	$ 3,390,023
Recourse Indebtedness
Extinguishment Of Debt [Line Items]
2016		89,798
2017		33,000
2018		65,679
2019		87,231
Thereafter	[1]	228,027
Total		503,735	514,541
Non-recourse indebtedness
Extinguishment Of Debt [Line Items]
2016		92,202
2017		37,400
2018		331,538
2019		6,236
2020		38,855
Thereafter	[1]	2,020,690
Total		$ 2,526,921	$ 2,875,482

[1] Includes $871 of our 7.0% convertible senior notes which are redeemable at par at the option of the holders in April 2021, and April 2026. Includes $126,098 of our 4.0% convertible senior notes which are redeemable at par at the option of the holders in October 2018, October 2023, and October 2028.