Reconciliation of BGH's Common Units and Management Units and Conversion to Buckeye's LP Units Outstanding (Parenthetical) (Detail)	1 Months Ended	12 Months Ended
	Nov. 30, 2010	Dec. 31, 2011	Dec. 31, 2010	Apr. 30, 2011	Nov. 19, 2010
Capital Unit [Line Items]
Stock split ratio	0.705	0.705
Buckeye LP Units issued to BGH unitholders		19,951,498		5,520,000	19,951,498
Buckeye's LP Units outstanding		85,968,423	71,436,099		51,556,716
Cancellation of units in connection with Merger			80,000