Net Income Per Common Limited Partner Unit (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Apr. 25, 2023	Apr. 17, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Net Income Per Limited Partner Unit
Repurchased units not deemed outstanding			9,791		58,044
Net income attributable to Global Partners LP			$ 29,031	$ 30,485
Declared distribution			24,016	21,344
Assumed allocation of undistributed net income			5,015	9,141
Assumed allocation of net income			$ 29,031	$ 30,485
Common Limited Partners
Denominator:
Basic weighted average common units outstanding			33,986,000	33,953,000
Diluted weighted average common units outstanding			34,001,000	34,085,000
Basic net income per common limited partner unit			$ 0.70	$ 0.76
Diluted net income per common limited partner unit			0.70	$ 0.76
Quarterly cash distributions declared (in dollars per unit)	$ 0.6550
Quarterly distribution declared (in dollars per unit)			0.6350
Special distribution declared (in dollars per unit)			$ 0.9375
Common Limited Partners | Subsequent event
Denominator:
Quarterly cash distributions declared (in dollars per unit)	$ 0.6550
Series A Preferred Limited Partners
Denominator:
Quarterly cash distributions declared (in dollars per unit)		$ 0.609375
Series A Preferred Limited Partners | Subsequent event
Denominator:
Quarterly cash distributions declared (in dollars per unit)		0.609375
Series B Preferred Limited Partners
Denominator:
Quarterly cash distributions declared (in dollars per unit)		0.59375
Series B Preferred Limited Partners | Subsequent event
Denominator:
Quarterly cash distributions declared (in dollars per unit)		$ 0.59375
Common Unitholders
Net Income Per Limited Partner Unit
Net income attributable to Global Partners LP			$ 27,249	$ 29,308
Declared distribution			22,267	20,227
Assumed allocation of undistributed net income			4,982	9,081
Assumed allocation of net income			27,249	29,308
Common Unitholders | Common Limited Partners
Net Income Per Limited Partner Unit
Assumed allocation of net income			$ 23,786	$ 25,845
Denominator:
Basic weighted average common units outstanding			33,986,000	33,953,000
Dilutive effect of phantom units			15,000	132,000
Diluted weighted average common units outstanding			34,001,000	34,085,000
Basic net income per common limited partner unit			$ 0.70	$ 0.76
Diluted net income per common limited partner unit			$ 0.70	$ 0.76
Common Unitholders | Preferred Limited Partners
Net Income Per Limited Partner Unit
Assumed allocation of net income			$ 3,463	$ 3,463
General Partner Interest
Net Income Per Limited Partner Unit
Net income attributable to Global Partners LP			1,782	1,177
Declared distribution			162	144
Assumed allocation of undistributed net income			33	60
Assumed allocation of net income			195	204
IDRs
Net Income Per Limited Partner Unit
Declared distribution			1,587	973
Assumed allocation of net income			$ 1,587	$ 973