INVESTMENT IN AECOM DC RETIREMENT PLANS SMA MASTER TRUST (Details) - EBP 055 - USD ($)
$ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
$ 7,291,530
|
$ 6,704,959
|
| Other |
668
|
561
|
| Total receivables |
76,971
|
73,890
|
| Accrued expenses |
(71)
|
(223)
|
| Total liabilities |
(234)
|
(291)
|
| Net assets available for benefits per the financial statements |
$ 7,368,267
|
6,778,558
|
| SMA Master Trust |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Plan's interest in Master Trust (percent) |
100.00%
|
|
| Master Trust | SMA Master Trust |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
$ 626,352
|
718,216
|
| Receivable for securities sold |
328
|
596
|
| Accrued income |
1,764
|
1,631
|
| Other |
515
|
514
|
| Total receivables |
2,607
|
2,741
|
| Due to broker for securities purchased |
(3,759)
|
(2,538)
|
| Accrued expenses |
(143)
|
(768)
|
| Total liabilities |
(3,902)
|
(3,306)
|
| Net assets available for benefits per the financial statements |
625,057
|
717,651
|
| Master Trust | SMA Master Trust | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
225,120
|
461,109
|
| Master Trust | SMA Master Trust | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
4,822
|
278,529
|
| Master Trust | SMA Master Trust | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
220,298
|
182,580
|
| Master Trust | SMA Master Trust | Investments measured at NAV |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
401,232
|
257,107
|
| Master Trust | SMA Master Trust | Stocks |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
269,919
|
| Master Trust | SMA Master Trust | Stocks | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
269,919
|
| Master Trust | SMA Master Trust | Stocks | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
269,919
|
| Master Trust | SMA Master Trust | Stocks | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Master Trust | SMA Master Trust | Government bonds |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
68,339
|
48,545
|
| Master Trust | SMA Master Trust | Government bonds | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
68,339
|
48,545
|
| Master Trust | SMA Master Trust | Government bonds | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Master Trust | SMA Master Trust | Government bonds | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
68,339
|
48,545
|
| Master Trust | SMA Master Trust | Corporate bonds |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
86,656
|
74,084
|
| Master Trust | SMA Master Trust | Corporate bonds | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
86,656
|
74,084
|
| Master Trust | SMA Master Trust | Corporate bonds | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Master Trust | SMA Master Trust | Corporate bonds | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
86,656
|
74,084
|
| Master Trust | SMA Master Trust | Mortgage-backed securities |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
58,570
|
53,807
|
| Master Trust | SMA Master Trust | Mortgage-backed securities | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
58,570
|
53,807
|
| Master Trust | SMA Master Trust | Mortgage-backed securities | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Master Trust | SMA Master Trust | Mortgage-backed securities | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
58,570
|
53,807
|
| Master Trust | SMA Master Trust | Asset-backed securities |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
6,733
|
6,144
|
| Master Trust | SMA Master Trust | Asset-backed securities | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
6,733
|
6,144
|
| Master Trust | SMA Master Trust | Asset-backed securities | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Master Trust | SMA Master Trust | Asset-backed securities | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
6,733
|
6,144
|
| Master Trust | SMA Master Trust | Northern Trust Collective Short-term Investment Fund |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
401,232
|
257,107
|
| Master Trust | SMA Master Trust | Cash and cash equivalents |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
4,822
|
8,610
|
| Master Trust | SMA Master Trust | Cash and cash equivalents | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
4,822
|
8,610
|
| Master Trust | SMA Master Trust | Cash and cash equivalents | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
4,822
|
8,610
|
| Master Trust | SMA Master Trust | Cash and cash equivalents | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Master Trust | SMA Master Trust | Arrowstreet International Equity Fund |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
383,294
|
253,548
|
| Unfunded Commitment |
0
|
0
|
| Master Trust | SMA Master Trust | Northern Trust All Country World ex-U.S. Index Fund |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
17,938
|
3,559
|
| Unfunded Commitment |
0
|
0
|
| Plan interest in Master Trust | SMA Master Trust |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
626,352
|
718,216
|
| Receivable for securities sold |
328
|
596
|
| Accrued income |
1,764
|
1,631
|
| Other |
515
|
514
|
| Total receivables |
2,607
|
2,741
|
| Due to broker for securities purchased |
(3,759)
|
(2,538)
|
| Accrued expenses |
(143)
|
(768)
|
| Total liabilities |
(3,902)
|
(3,306)
|
| Net assets available for benefits per the financial statements |
625,057
|
717,651
|
| Plan interest in Master Trust | SMA Master Trust | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
225,120
|
461,109
|
| Plan interest in Master Trust | SMA Master Trust | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
4,822
|
278,529
|
| Plan interest in Master Trust | SMA Master Trust | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
220,298
|
182,580
|
| Plan interest in Master Trust | SMA Master Trust | Investments measured at NAV |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
401,232
|
257,107
|
| Plan interest in Master Trust | SMA Master Trust | Stocks |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
269,919
|
| Plan interest in Master Trust | SMA Master Trust | Stocks | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
269,919
|
| Plan interest in Master Trust | SMA Master Trust | Stocks | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
269,919
|
| Plan interest in Master Trust | SMA Master Trust | Stocks | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Plan interest in Master Trust | SMA Master Trust | Government bonds |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
68,339
|
48,545
|
| Plan interest in Master Trust | SMA Master Trust | Government bonds | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
68,339
|
48,545
|
| Plan interest in Master Trust | SMA Master Trust | Government bonds | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Plan interest in Master Trust | SMA Master Trust | Government bonds | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
68,339
|
48,545
|
| Plan interest in Master Trust | SMA Master Trust | Corporate bonds |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
86,656
|
74,084
|
| Plan interest in Master Trust | SMA Master Trust | Corporate bonds | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
86,656
|
74,084
|
| Plan interest in Master Trust | SMA Master Trust | Corporate bonds | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Plan interest in Master Trust | SMA Master Trust | Corporate bonds | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
86,656
|
74,084
|
| Plan interest in Master Trust | SMA Master Trust | Mortgage-backed securities |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
58,570
|
53,807
|
| Plan interest in Master Trust | SMA Master Trust | Mortgage-backed securities | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
58,570
|
53,807
|
| Plan interest in Master Trust | SMA Master Trust | Mortgage-backed securities | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Plan interest in Master Trust | SMA Master Trust | Mortgage-backed securities | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
58,570
|
53,807
|
| Plan interest in Master Trust | SMA Master Trust | Asset-backed securities |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
6,733
|
6,144
|
| Plan interest in Master Trust | SMA Master Trust | Asset-backed securities | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
6,733
|
6,144
|
| Plan interest in Master Trust | SMA Master Trust | Asset-backed securities | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Plan interest in Master Trust | SMA Master Trust | Asset-backed securities | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
6,733
|
6,144
|
| Plan interest in Master Trust | SMA Master Trust | Northern Trust Collective Short-term Investment Fund |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
401,232
|
257,107
|
| Plan interest in Master Trust | SMA Master Trust | Cash and cash equivalents |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
4,822
|
8,610
|
| Plan interest in Master Trust | SMA Master Trust | Cash and cash equivalents | Total Fair Value |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
4,822
|
8,610
|
| Plan interest in Master Trust | SMA Master Trust | Cash and cash equivalents | Level 1 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
4,822
|
8,610
|
| Plan interest in Master Trust | SMA Master Trust | Cash and cash equivalents | Level 2 |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
0
|
0
|
| Plan interest in Master Trust | SMA Master Trust | Arrowstreet International Equity Fund |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
383,294
|
253,548
|
| Unfunded Commitment |
0
|
0
|
| Plan interest in Master Trust | SMA Master Trust | Northern Trust All Country World ex-U.S. Index Fund |
|
|
| EBP, Master Trust [Line Items] |
|
|
| Investments at fair value |
17,938
|
3,559
|
| Unfunded Commitment |
$ 0
|
$ 0
|