Consolidated Statements of Changes in Shareholders' Equity (Parenthetical)	Jan. 18, 2019
Reverse stock split of common shares	0.01
Common stock [Member] \| Major ordinary share transactions [Member]
Reverse stock split of common shares	0.10

Stockholders' Equity Note, Stock Split, Conversion Ratio1

No definition available.

Name:	stng_StockholdersEquityNoteStockSplitConversionRatio1
Namespace Prefix:	stng_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration