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GOODWILL AND INTANGIBLE ASSETS - Rollforward of Company's Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 30, 2017 | Dec. 31, 2016 | Dec. 26, 2015
Goodwill [Roll Forward] |  |  |
Gross carrying amount, beginning balance | $ 1,792,517 | $ 1,443,829 |
Gross carrying amount, ending balance | 1,809,906 | 1,792,517 |
Accumulated impairment loss - DSA | (1,005,000) | (1,005,000) | $ (1,005,000)
Goodwill | 804,906 | 787,517 | $ 438,829
RMS |  |  |
Goodwill [Roll Forward] |  |  |
Gross carrying amount, beginning balance | 56,397 | 58,167 |
Adjustments to Goodwill, Acquisitions | 0 | 0 |
Adjustments to Goodwill, Transfers |  | (342) |
Adjustments to Goodwill, Foreign Exchange | 1,725 | (1,428) |
Gross carrying amount, ending balance | 58,122 | 56,397 |
DSA |  |  |
Goodwill [Roll Forward] |  |  |
Gross carrying amount, beginning balance | 1,568,476 | 1,252,050 |
Adjustments to Goodwill, Acquisitions | 11,942 | 337,872 |
Adjustments to Goodwill, Transfers |  | 0 |
Adjustments to Goodwill, Foreign Exchange | 29,758 | (21,446) |
Gross carrying amount, ending balance | 1,610,176 | 1,568,476 |
Manufacturing |  |  |
Goodwill [Roll Forward] |  |  |
Gross carrying amount, beginning balance | 167,644 | 133,612 |
Adjustments to Goodwill, Acquisitions | (36,000) | 46,859 |
Adjustments to Goodwill, Transfers |  | 342 |
Adjustments to Goodwill, Foreign Exchange | 9,964 | (13,169) |
Gross carrying amount, ending balance | $ 141,608 | $ 167,644 |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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