Financial Highlights (Details) - USD ($)		11 Months Ended		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2019
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member]
Investment Company, Financial Highlights [Line Items]
NAV Beginning of Period	[1]	$ 13.73		$ 11.32
Net Investment Income/Loss	[2]	0.11	[1]	0.13
Net Realized and Unrealized Gain/Loss		(1.39)	[1]	1.70
Total from Operations		(1.28)	[1]	1.83
Distributions from Net Investment Income		(1.13)	[1]	(1.30)
Total Distributions		(1.13)	[1]	(1.30)
NAV End of Period		$ 11.32	[1]	$ 11.85
Total Return	[3]	(10.08%)	[1]	16.72%
Market Price		$ 11.33	[1]	$ 11.88
Net Assets End of Period		$ 4,527	[1]	$ 24,291
Ratio of Expenses to Average Net Assets	[4]	1.75%	[1]	0.84%
Ratio of Expenses to Average Net Assets (Excluding Waivers)	[4]	7.24%	[1]	1.51%
Ratio of Net Investment Income/Loss to Average Net Assets	[4]	0.86%	[1]	1.10%
Portfolio Turnover	[5]	20.00%	[1]	27.00%
U.S. Equity Ex-Dividends Fund-Series 2027 [Member]
Investment Company, Financial Highlights [Line Items]
NAV Beginning of Period	[1]	$ 51.48		$ 49.98
Net Investment Income/Loss	[2]	0.15	[1]	0.83
Net Realized and Unrealized Gain/Loss		(1.65)	[1]	16.54
Total from Operations		(1.50)	[1]	17.37
Distributions from Net Investment Income			[1]
Total Distributions			[1]
NAV End of Period		$ 49.98	[1]	$ 67.35
Total Return	[3]	(2.91%)	[1]	34.75%
Market Price		$ 49.63	[1]	$ 67.04
Net Assets End of Period		$ 12,496	[1]	$ 26,942
Ratio of Expenses to Average Net Assets	[4]	1.59%	[1]	0.76%
Ratio of Expenses to Average Net Assets (Excluding Waivers)	[4]	2.65%	[1]	1.02%
Ratio of Net Investment Income/Loss to Average Net Assets	[4]	0.28%	[1]	1.38%
Portfolio Turnover	[5]	0.00%	[1]	0.00%

[1] From commencement of operations, January 17, 2018 (commencement of operations) through December 31, 2018.

[2] Per share data calculated using average shares method.

[3] Total return is for the period indicated and has not been annualized.

[4] Annualized

[5] Portfolio turnover rate is for the period indicated and has not been annualized.