The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	$ 8,048,906	$ 7,600,949
Capitalized interest	15,980	3,732
Capitalization of internal use computer software	34,650	29,407	$ 25,166
Asset retirement obligations	30,831	28,256
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	448,566	400,980
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	3,029,309	2,991,307
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	852,022	770,666
Racking
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	2,040,832	2,001,831
Warehouse equipment/vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	483,218	481,515
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	54,275	56,207
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	689,261	680,283
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	$ 451,423	$ 218,160
Minimum \| Buildings and building improvements
Property, Plant and Equipment [Line Items]
Useful life	5 years
Minimum \| Leasehold improvements
Property, Plant and Equipment [Line Items]
Useful life	5 years
Minimum \| Racking
Property, Plant and Equipment [Line Items]
Useful life	1 year
Minimum \| Warehouse equipment/vehicles
Property, Plant and Equipment [Line Items]
Useful life	1 year
Minimum \| Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful life	1 year
Minimum \| Computer hardware and software
Property, Plant and Equipment [Line Items]
Useful life	2 years
Maximum \| Buildings and building improvements
Property, Plant and Equipment [Line Items]
Useful life	40 years
Maximum \| Leasehold improvements
Property, Plant and Equipment [Line Items]
Useful life	10 years
Maximum \| Racking
Property, Plant and Equipment [Line Items]
Useful life	20 years
Maximum \| Warehouse equipment/vehicles
Property, Plant and Equipment [Line Items]
Useful life	10 years
Maximum \| Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful life	10 years
Maximum \| Computer hardware and software
Property, Plant and Equipment [Line Items]
Useful life	5 years