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Business Combinations - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Sep. 27, 2019 | Jun. 12, 2019 | Sep. 28, 2018 | Dec. 15, 2017
--- | --- | --- | --- | ---
Assets |  |  |  |
Goodwill | $ 5,432,544 |  | $ 4,795,856 |
KeyW Holding Corporation |  |  |  |
Assets |  |  |  |
Cash and cash equivalents |  | $ 29,100 |  |
Receivables |  | 80,100 |  |
Inventories, net |  | 21,300 |  |
Prepaid expenses and other |  | 2,500 |  |
Property, equipment and improvements, net |  | 25,900 |  |
Deferred tax asset and other |  | 36,700 |  |
Goodwill |  | 611,800 |  |
Identifiable intangible assets |  | 179,000 |  |
Total Assets |  | 986,400 |  |
Liabilities |  |  |  |
Accounts payable |  | 8,300 |  |
Accrued liabilities |  | 68,700 |  |
Short term debt |  | 298,400 |  |
Long-term debt |  | 275,800 |  |
Other current liabilities |  | 3,900 |  |
Other deferred liabilities |  | 2,900 |  |
Total Liabilities |  | 382,200 |  |
Net assets acquired |  | $ 604,200 |  |
CH2M HILL Companies, Ltd. |  |  |  |
Assets |  |  |  |
Cash and cash equivalents |  |  |  | $ 315,200
Receivables |  |  |  | 1,120,600
Prepaid expenses and other |  |  |  | 72,700
Property, equipment and improvements, net |  |  |  | 175,100
Goodwill |  |  |  | 3,165,500
Identifiable intangible assets |  |  |  | 416,700
Miscellaneous |  |  |  | 530,800
Total Assets |  |  |  | 5,796,600
Liabilities |  |  |  |
Notes payable |  |  |  | 2,200
Accounts payable |  |  |  | 309,600
Accrued liabilities |  |  |  | 787,400
Contract liabilities |  |  |  | 260,800
Lease intangible liabilities |  |  |  | 9,600
Long-term debt |  |  |  | 706,000
Other deferred liabilities |  |  |  | 659,000
Total Liabilities |  |  |  | 2,734,600
Noncontrolling interests |  |  |  | (37,300)
Net assets acquired |  |  |  | 3,024,700
CH2M HILL Companies, Ltd. | Customer relationships, contracts and backlog |  |  |  |
Assets |  |  |  |
Identifiable intangible assets |  |  |  | 412,300
CH2M HILL Companies, Ltd. | Lease intangible assets |  |  |  |
Assets |  |  |  |
Identifiable intangible assets |  |  |  | $ 4,400

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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