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v3.20.4

Revision to Previously Reported Financial Information (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Prepaid expenses and other | $ 110,635 | $ 106,478 |  |
Assets, Current | 2,904,333 | 2,506,747 |  |
Property, plant and equipment, net | 556,873 | 563,564 |  |
Other Assets, Noncurrent | 221,426 | 253,054 |  |
Identifiable assets | 5,314,677 | 4,938,277 | $ 4,649,369 |
Contract liabilities | 194,227 | 221,095 |  |
Liabilities, Current | 1,141,633 | 1,117,442 |  |
Retirement obligations and other liabilities | 516,087 | 530,994 |  |
Retained Earnings (Accumulated Deficit) | 3,656,449 | 3,652,244 |  |
Stockholders' Equity Attributable to Parent | 1,732,470 | 1,746,739 |  |
Stockholders' equity | 1,762,800 | 1,772,341 | 1,632,003 | $ 1,658,531
Liabilities and Equity | 5,314,677 | 4,938,277 |  |
Net Cash Provided by (Used in) Operating Activities | 310,537 | 324,097 | 190,831 |
Net Cash Provided by (Used in) Investing Activities | (41,700) | (33,383) | (81,466) |
Net Cash Provided by (Used in) Financing Activities | 147,587 | (231,464) | (173,284) |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | $ 1,095,274 | 670,980 | $ 619,683 | 703,445
As Reported |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Prepaid expenses and other |  | 105,101 |  |
Assets, Current |  | 2,505,370 |  |
Property, plant and equipment, net |  | 572,175 |  |
Other Assets, Noncurrent |  | 227,185 |  |
Identifiable assets |  | 4,919,642 |  |
Contract liabilities |  | 216,541 |  |
Liabilities, Current |  | 1,112,888 |  |
Retirement obligations and other liabilities |  | 473,295 |  |
Retained Earnings (Accumulated Deficit) |  | 3,695,862 |  |
Stockholders' Equity Attributable to Parent |  | 1,790,357 |  |
Stockholders' equity |  | 1,815,959 |  |
Liabilities and Equity |  | 4,919,642 |  |
Net Cash Provided by (Used in) Operating Activities |  | 312,741 |  |
Net Cash Provided by (Used in) Investing Activities |  | (23,837) |  |
Net Cash Provided by (Used in) Financing Activities |  | (229,654) |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents |  | 670,980 |  |
Adjustments |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Prepaid expenses and other |  | 1,377 |  |
Assets, Current |  | 1,377 |  |
Property, plant and equipment, net |  | (8,611) |  |
Other Assets, Noncurrent |  | 25,869 |  |
Identifiable assets |  | 18,635 |  |
Contract liabilities |  | 4,554 |  |
Liabilities, Current |  | 4,554 |  |
Retirement obligations and other liabilities |  | 57,699 |  |
Retained Earnings (Accumulated Deficit) |  | (43,618) |  | $ 28,800
Stockholders' Equity Attributable to Parent |  | (43,618) |  |
Stockholders' equity |  | (43,618) |  |
Liabilities and Equity |  | 18,635 |  |
Net Cash Provided by (Used in) Operating Activities |  | 11,356 |  |
Net Cash Provided by (Used in) Investing Activities |  | (9,546) |  |
Net Cash Provided by (Used in) Financing Activities |  | (1,810) |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents |  | $ 0 |  |

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