Shareholder Report, Line Graph (Details) - USD ($) |
May 31, 2025 |
Feb. 28, 2025 |
Nov. 30, 2024 |
Aug. 31, 2024 |
May 31, 2024 |
Feb. 29, 2024 |
Nov. 30, 2023 |
Aug. 31, 2023 |
May 31, 2023 |
Feb. 28, 2023 |
Nov. 30, 2022 |
Aug. 31, 2022 |
May 31, 2022 |
Feb. 28, 2022 |
Nov. 30, 2021 |
Aug. 31, 2021 |
Jul. 26, 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C000222704 | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Account Value | $ 11,202 | $ 11,113 | $ 11,066 | $ 10,807 | $ 10,323 | $ 10,097 | $ 9,525 | $ 9,441 | $ 9,136 | $ 8,988 | $ 8,977 | $ 8,865 | $ 9,201 | $ 9,680 | $ 9,990 | $ 10,120 | $ 10,000 |
| C000222705 | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Account Value | 564,049 | 559,028 | 556,910 | 543,406 | 519,098 | 507,755 | 478,390 | 473,643 | 458,874 | 450,963 | 450,223 | 444,614 | 460,930 | 485,404 | 500,000 | 506,500 | 500,000 |
| Bloomberg U.S. Aggregate Bond Index | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Account Value | 9,451 | 9,479 | 9,379 | 9,391 | 8,962 | 8,958 | 8,776 | 8,753 | 8,847 | 8,670 | 8,673 | 8,858 | 9,040 | 9,603 | 9,951 | 10,011 | 10,000 |
| Bloomberg U.S. Aggregate Bond Index | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Account Value | 472,563 | 473,930 | 468,955 | 469,562 | 448,102 | 447,914 | 438,788 | 437,629 | 442,327 | 433,491 | 433,671 | 442,914 | 452,013 | 480,173 | 497,555 | 500,558 | 500,000 |
| S&P Target Date 2015 Index | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Account Value | 11,099 | 10,983 | 10,907 | 10,763 | 10,270 | 10,093 | 9,619 | 9,544 | 9,337 | 9,173 | 9,126 | 9,045 | 9,312 | 9,770 | 10,028 | 10,111 | 10,000 |
| S&P Target Date 2015 Index | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Account Value | $ 554,954 | $ 549,140 | $ 545,336 | $ 538,145 | $ 513,520 | $ 504,673 | $ 480,949 | $ 477,181 | $ 466,861 | $ 458,656 | $ 456,294 | $ 452,257 | $ 465,614 | $ 488,509 | $ 501,400 | $ 505,546 | $ 500,000 |