Financial Highlights (Tables)

6 Months Ended

Jun. 30, 2020

Investment Company, Financial Highlights [Abstract]

Schedule of financial highlights

																												Ratio of
						Net																						Expenses			Ratio of
						Realized																	Net Assets		Ratio of			to Average			Net Investment
	NAV		Net			and		Total		Distributions						NAV							End of		Expenses			Net Assets			Income/Loss to
	Beginning		Investment			Unrealized		from		from Net			Total			End of		Total			Market		Period		to Average			(Excluding			Average			Portfolio
	of Period		Income/Loss*			Gain/Loss		Operations		Investment Income			Distributions			Period		Return(1)			Price		(000)		Net Assets (3)			Waivers) (3)			Net Assets (3)			Turnover (2)
U.S. Equity Cumulative Dividends Fund─Series 2027
2020	$	8.23	$	(0.00	)	$	1.43	$	1.43	$	(0.34	)	$	(0.34	)	$	9.32		17.50	%	$	9.73	$	19,109		0.87	%		0.87	%		-0.15	%		57	%
U.S. Equity Ex-Dividend Fund─Series 2027
2020	$	55.25	$	(0.05	)	$	11.85	$	11.80	$	-		$	-		$	67.05		21.36	%	$	66.86	$	26,821		0.58	%		0.58	%		-0.34	%		0	%

* Per share data calculated using average shares method.

⁽¹⁾ Total return is for the period indicated and has not been annualized.

⁽²⁾ Portfolio turnover rate is for the period indicated and has not been annualized.

⁽³⁾ Annualized

Amounts designated as "-" are $0.

Six Months Ended June 30, 2020 (Unaudited)

																													Ratio of
					Net																								Expenses			Ratio of
					Realized																			Net Assets		Ratio of			to Average			Net Investment
	NAV		Net		and			Total			Distributions						NAV							End of		Expenses			Net Assets			Income/Loss to
	Beginning		Investment		Unrealized			from			from Net			Total			End of		Total			Market		Period		to Average			(Excluding			Average			Portfolio
	of Period		Income/Loss*		Gain/Loss			Operations			Investment Income			Distributions			Period		Return(1)			Price		(000)		Net Assets (3)			Waivers) (3)			Net Assets (3)			Turnover (2)
U.S. Equity Cumulative Dividends Fund─Series 2027
2020	$	11.85	$	0.02	$	(1.86	)	$	(1.84	)	$	(0.70	)	$	(0.70	)	$	9.32		-15.54	%	$	9.73	$	19,109		0.87	%		0.87	%		0.40	%		84	%
U.S. Equity Ex-Dividend Fund─Series 2027
2020	$	67.35	$	0.08	$	(0.38	)	$	(0.30	)	$	-		$	-		$	67.05		-0.45	%	$	66.86	$	26,281		0.58	%		0.58	%		0.25	%		0	%

* Per share data calculated using average shares method.

⁽¹⁾ Total return is for the period indicated and has not been annualized.

⁽²⁾ Portfolio turnover rate is for the period indicated and has not been annualized.

⁽³⁾ Annualized

Amounts designated as "-" are $0.

Three Months Ended June 30, 2019 (Unaudited)

	NAV Beginning of Period		Net Investment Income/Loss*		Net Realized and Unrealized Gain/Loss		Total from Operations		Distributions from Net Investment Income			Total Distributions			NAV End of Period		Total Return(1)			Market Price		Net Assets End of Period (000)		Ratio of Expenses to Average Net Assets (3)			Ratio of Expenses to Average Net Assets (Excluding Waivers) (3)			Ratio of Net Investment Income/Loss to Average Net Assets (3)			Portfolio Turnover (2)
U.S. Equity Cumulative Dividends Fund─Series 2027
2019	$	12.13	$	0.05	$	0.23	$	0.29	$	(0.35	)	$	(0.35	)	$	12.07		2.38	%	$	12.29	$	24,142		0.76	%		3.10	%		1.70	%		10	%
U.S. Equity Ex-Dividend Fund─Series 2027
2019	$	57.44	$	0.35	$	2.43	$	2.78	$	-		$	-		$	60.22		4.86	%	$	60.06	$	24,090		0.86	%		1.28	%		1.53	%		0	%

* Per share data calculated using average shares method.

⁽¹⁾ Total return is for the period indicated and has not been annualized.

⁽²⁾ Portfolio turnover rate is for the period indicated and has not been annualized.

⁽³⁾ Annualized

Amounts designated as "-" are $0.

Six Months Ended June 30, 2019 (Unaudited)

																											Ratio of
					Net																						Expenses			Ratio of
					Realized																	Net Assets		Ratio of			to Average			Net Investment
	NAV		Net		and		Total		Distributions						NAV							End of		Expenses			Net Assets			Income/Loss to
	Beginning		Investment		Unrealized		from		from Net			Total			End of		Total			Market		Period		to Average			(Excluding			Average			Portfolio
	of Period		Income/Loss*		Gain/Loss		Operations		Investment Income			Distributions			Period		Return(1)			Price		(000)		Net Assets (3)			Waivers) (3)			Net Assets (3)			Turnover (2)
U.S. Equity Cumulative Dividends Fund─Series 2027
2019	$	11.32	$	0.11	$	1.27	$	1.38	$	(0.63	)	$	(0.63	)	$	12.07		12.28	%	$	12.29	$	24,142		0.68	%		4.95	%		1.88	%		27	%
U.S. Equity Ex-Dividend Fund─Series 2027
2019	$	49.98	$	0.36	$	9.88	$	10.24	$	-		$	-		$	60.22		20.50	%	$	60.06	$	24,090		1.08	%		1.79	%		1.30	%		0	%

* Per share data calculated using average shares method.

⁽¹⁾ Total return is for the period indicated and has not been annualized.

⁽²⁾ Portfolio turnover rate is for the period indicated and has not been annualized.

⁽³⁾ Annualized

Amounts designated as "-" are $0.