Subsequent Events - Additional Information (Detail)		6 Months Ended
	Jul. 01, 2020	Jun. 30, 2020
Subsequent Event [Line Items]
Annualized general partner administrative fee		2.00%
Morgan Stanley Wealth Management [Member]
Subsequent Event [Line Items]
Ongoing selling agent fee percentage		2.00%
Subsequent Event [Member]
Subsequent Event [Line Items]
Annualized general partner administrative fee	1.75%
Subsequent Event [Member] | Morgan Stanley Wealth Management [Member]
Subsequent Event [Line Items]
Ongoing selling agent fee percentage	1.00%