SUMMARY OF ACCOUNTING POLICIES - Other Current Assets and Investments (Details) - USD ($)
$ in Thousands |
3 Months Ended |
12 Months Ended |
Mar. 31, 2019 |
Dec. 31, 2018 |
Jun. 29, 2018 |
Sep. 29, 2017 |
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2017 |
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
|
|
|
|
|
|
|
| Investments in non-consolidated companies |
$ 294,100
|
|
|
|
$ 294,100
|
$ 411,100
|
|
| Investment impairments and dispositions |
|
|
|
|
193,063
|
21,895
|
$ 0
|
| Gain on deconsolidation |
|
|
|
|
86,614
|
151,574
|
0
|
| Inventory impairment and other |
|
$ 70,000
|
|
|
|
|
93,000
|
| Asset-backed Securities |
|
|
|
|
|
|
|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
|
|
|
|
|
|
|
| Transferor's interests in transferred financial assets |
292,500
|
|
|
|
292,500
|
445,400
|
|
| Elementum |
|
|
|
|
|
|
|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
|
|
|
|
|
|
|
| Gain on deconsolidation |
|
|
|
$ 151,600
|
|
|
|
| Derecognized cash |
|
|
|
|
|
72,600
|
|
| Variable interest |
|
|
|
|
|
125,000
|
|
| Inventory impairment and other |
84,000
|
|
|
|
|
|
|
| RIB Software AG [Member] |
|
|
|
|
|
|
|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
|
|
|
|
|
|
|
| Contributions for non-controlling interest in joint venture |
|
|
|
|
|
|
60,000
|
| Proceeds from sale of non-controlling interest in joint venture |
|
$ 48,400
|
|
|
|
|
|
| Unrelated Third-Party Company |
|
|
|
|
|
|
|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
|
|
|
|
|
|
|
| Gain on deconsolidation |
|
|
|
|
76,000
|
|
|
| Bright Machines |
|
|
|
|
|
|
|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
|
|
|
|
|
|
|
| Investments in non-consolidated companies |
|
|
$ 127,600
|
|
|
|
|
| Gain on deconsolidation |
|
|
|
|
87,000
|
|
|
| Transfer of employees and equipment, net book value |
|
|
$ 35,000
|
|
|
|
|
| Capital lease asset |
30,300
|
|
|
|
30,300
|
|
|
| Capital lease obligation |
$ 34,828
|
|
|
|
$ 34,828
|
$ 0
|
$ 0
|