Other Comprehensive Loss - Changes in Accumulated OCI by Component (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income Loss [Line Items]
Change in cash flow hedges reclassed to earnings	$ (688)	$ (1,173)	$ (472)
Reclassification adjustment of foreign currency translation			21,755
Sonae Sierra Brazil [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Reclassification adjustment of foreign currency translation			19,700
Other Income (Expense), Net [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Change in cash flow hedges reclassed to earnings		600
Interest Expense [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Change in cash flow hedges reclassed to earnings	800	700	600
Equity in Net Income of Joint Ventures [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Change in cash flow hedges reclassed to earnings	$ 100	$ 100	100
Foreign Currency [Member] | Russia and Canada [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Reclassification adjustment of foreign currency translation			$ 2,100