Other Assets and Intangibles - Summary of Estimated Future Amortization Expense Associated with Intangible Assets, Excluding Above and Below-Market Leases (Detail) $ in Millions	Dec. 31, 2016 USD ($)
Intangible Assets Net Excluding Goodwill [Abstract]
Future amortization expense, 2017	$ 61.0
Future amortization expense, 2018	43.6
Future amortization expense, 2019	32.9
Future amortization expense, 2020	23.6
Future amortization expense, 2021	$ 17.2