Fair Value Measurements - Summary of Derivative Instrument Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Details) - Teekay Tankers [Member] - Level 3 [Member] - Time-charter Swap [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair value at the beginning of the year	$ 0	$ 0
Settlements	(2,154)	0
Realized and unrealized gain	2,362	0
Fair value at the end of the year	$ 208	$ 0