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Employee Benefit Plans - Obligations and Funded Status (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($) Participants | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined contribution plan expense | $ 46,030 | $ 43,447 | $ 37,065
Number of participants covered by post retirement benefit plans | Participants | 409 |  |
Number of participants eligible for medical benefits | Participants | 386 |  |
Change in Benefit Obligation [Roll Forward] |  |  |
Settlements and Curtailments | $ 12,565 | (3,844) | 0
Change in Fair Value of Plan Assets [Roll Forward] |  |  |
Benefits paid |  | 38,490 |
Amounts Recognized in Balance Sheet [Abstract] |  |  |
Other liabilities (deferred compensation) | 167,930 | 185,972 |
Accumulated Other Comprehensive Loss (Earnings) [Abstract] |  |  |
Total Accumulated Other Comprehensive Loss (Earnings), net of tax | 102,932 | 100,538 |
Accumulated benefit obligation | 756,194 | 908,656 |
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract] |  |  |
Projected benefit obligation (PBO) | 330,168 | 372,559 |
Accumulated benefit obligation (ABO) | 311,192 | 349,735 |
Defined Benefit Plan Fair Value Of Plan Assets Gross | 154,673 | 162,890 |
Pension Plan [Member] | Qualified Plan [Member] | Domestic Plan [Member] |  |  |
Change in Benefit Obligation [Roll Forward] |  |  |
Benefit obligation at beginning of year | 566,389 | 535,299 |
Service cost | 9,019 | 12,083 | 13,913
Interest cost | 20,756 | 21,718 | 23,046
Plan participants' contributions | 0 | 0 |
Benefits Paid | 18,172 | 38,490 |
Actuarial (gain) loss | (48,104) | 35,446 |
Business acquisitions | 0 | 0 |
Amendments | 69 | 364 |
Settlements and Curtailments | (78,896) | (32) |
Currency translation and other | 0 | 1 |
Business divestitures | (3,888) | 0 |
Benefit obligation at end of year | 447,173 | 566,389 | 535,299
Change in Fair Value of Plan Assets [Roll Forward] |  |  |
Fair value of plan assets at beginning of year | 617,840 | 562,564 |
Actual return on plan assets | (32,939) | 93,766 |
Company contributions | 0 | 0 |
Plan participant's contributions | 0 | 0 |
Benefits paid | 18,172 | 38,490 |
Settlements and curtailments | (74,016) | 0 |
Foreign currency translation | 0 | 0 |
Business divestitures | (3,813) | 0 |
Fair value of plan assets at end of year | 488,900 | 617,840 | 562,564
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract] |  |  |
Funded (Unfunded) status | 41,727 | 51,451 |
Amounts Recognized in Balance Sheet [Abstract] |  |  |
Other assets and deferred charges | 41,727 | 51,451 |
Accrued compensation and employee benefits | 0 | 0 |
Other liabilities (deferred compensation) | 0 | 0 |
Total assets and liabilities | 41,727 | 51,451 |
Accumulated Other Comprehensive Loss (Earnings) [Abstract] |  |  |
Net actuarial losses (gains) | 81,437 | 79,288 |
Prior service cost (credit) | 852 | 1,344 |
Net asset at transition, other | 0 | 0 |
Deferred taxes | (17,597) | (30,777) |
Total Accumulated Other Comprehensive Loss (Earnings), net of tax | 64,692 | 49,855 |
Net amount recognized on the balance sheet | 106,419 | 101,306 |
Accumulated benefit obligation | 438,005 | 547,278 |
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract] |  |  |
Defined Benefit Plan Fair Value Of Plan Assets Gross | 267,762 | 209,271 |
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract] |  |  |
Prior service cost (credit) | 303 |  |
Recognized actuarial loss (gain) | 0 |  |
Transition obligation | 0 |  |
Amounts that will be amortized from accumulated other comprehensive earnings (loss) in next fiscal year | 303 |  |
Pension Plan [Member] | Qualified Plan [Member] | Foreign Plan [Member] |  |  |
Change in Benefit Obligation [Roll Forward] |  |  |
Benefit obligation at beginning of year | 278,188 | 243,483 |
Service cost | 5,359 | 5,688 | 5,590
Interest cost | 4,962 | 5,263 | 5,593
Plan participants' contributions | 1,279 | 1,237 |
Benefits Paid | 8,161 | 8,528 |
Actuarial (gain) loss | (19,533) | 8,812 |
Business acquisitions | 0 | (1,810) |
Amendments | 3,073 | 0 |
Settlements and Curtailments | (1,813) | 0 |
Currency translation and other | 21,554 | 20,423 |
Business divestitures | (14,579) | 0 |
Benefit obligation at end of year | 270,329 | 278,188 | 243,483
Change in Fair Value of Plan Assets [Roll Forward] |  |  |
Fair value of plan assets at beginning of year | 175,534 | 148,514 |
Actual return on plan assets | (8,490) | 15,849 |
Company contributions | 5,961 | 7,971 |
Plan participant's contributions | 1,279 | 1,237 |
Benefits paid | 8,161 | 8,528 |
Settlements and curtailments | (1,472) | 0 |
Foreign currency translation | 11,223 | 10,491 |
Business divestitures | (13,285) | 0 |
Fair value of plan assets at end of year | 162,589 | 175,534 | 148,514
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract] |  |  |
Funded (Unfunded) status | (107,740) | (102,654) |
Amounts Recognized in Balance Sheet [Abstract] |  |  |
Other assets and deferred charges | 919 | 890 |
Accrued compensation and employee benefits | 1,493 | 1,484 |
Other liabilities (deferred compensation) | 107,166 | 102,172 |
Total assets and liabilities | (107,740) | (102,654) |
Accumulated Other Comprehensive Loss (Earnings) [Abstract] |  |  |
Net actuarial losses (gains) | 66,480 | 69,490 |
Prior service cost (credit) | (72) | (3,500) |
Net asset at transition, other | 0 | (60) |
Deferred taxes | (14,861) | (14,982) |
Total Accumulated Other Comprehensive Loss (Earnings), net of tax | 51,547 | 50,948 |
Net amount recognized on the balance sheet | (56,193) | (51,706) |
Accumulated benefit obligation | 258,109 | 264,766 |
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract] |  |  |
Defined Benefit Plan Fair Value Of Plan Assets Gross | 103,906 | 109,403 |
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract] |  |  |
Prior service cost (credit) | (238) |  |
Recognized actuarial loss (gain) | 3,241 |  |
Transition obligation | 0 |  |
Amounts that will be amortized from accumulated other comprehensive earnings (loss) in next fiscal year | 3,003 |  |
Supplemental Employee Retirement Plans, Defined Benefit [Member] | Nonqualified Plan [Member] |  |  |
Change in Benefit Obligation [Roll Forward] |  |  |
Benefit obligation at beginning of year | 106,012 | 110,446 |
Service cost | 2,624 | 2,473 | 2,959
Interest cost | 3,204 | 4,076 | 5,268
Plan participants' contributions | 0 | 0 |
Benefits Paid | 19,352 | 11,576 |
Actuarial (gain) loss | (7,687) | 593 |
Business acquisitions | 0 | 0 |
Amendments | 0 | 0 |
Settlements and Curtailments | (2,289) | 0 |
Currency translation and other | 0 | 0 |
Business divestitures | (15,676) | 0 |
Benefit obligation at end of year | 66,836 | 106,012 | 110,446
Change in Fair Value of Plan Assets [Roll Forward] |  |  |
Fair value of plan assets at beginning of year | 0 | 0 |
Actual return on plan assets | 0 | 0 |
Company contributions | 19,352 | 11,576 |
Plan participant's contributions |  | 0 |
Benefits paid | 19,352 | 11,576 |
Settlements and curtailments | 0 | 0 |
Foreign currency translation | 0 | 0 |
Fair value of plan assets at end of year | 0 | 0 | 0
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract] |  |  |
Funded (Unfunded) status | (66,836) | (106,012) |
Amounts Recognized in Balance Sheet [Abstract] |  |  |
Other assets and deferred charges | 0 | 0 |
Accrued compensation and employee benefits | 13,219 | 15,903 |
Other liabilities (deferred compensation) | 53,617 | 75,911 |
Total assets and liabilities | (66,836) | (106,012) |
Accumulated Other Comprehensive Loss (Earnings) [Abstract] |  |  |
Net actuarial losses (gains) | (25,186) | (13,780) |
Prior service cost (credit) | 9,099 | 13,777 |
Net asset at transition, other | 0 | 0 |
Deferred taxes | 3,461 | 83 |
Total Accumulated Other Comprehensive Loss (Earnings), net of tax | (12,626) | 80 |
Net amount recognized on the balance sheet | (79,462) | (105,932) |
Accumulated benefit obligation | 60,080 | 96,612 |
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract] |  |  |
Prior service cost (credit) | 2,811 |  |
Recognized actuarial loss (gain) | (2,280) |  |
Transition obligation | 0 |  |
Amounts that will be amortized from accumulated other comprehensive earnings (loss) in next fiscal year | 531 |  |
Other Postretirement Benefit Plans, Defined Benefit [Member] |  |  |
Change in Benefit Obligation [Roll Forward] |  |  |
Benefit obligation at beginning of year | 8,595 | 12,263 |
Service cost | 30 | 68 | 52
Interest cost | 290 | 783 | 403
Plan participants' contributions | 0 | 0 |
Benefits Paid | 620 | 917 |
Actuarial (gain) loss | (446) | 946 |
Business acquisitions | 0 | 0 |
Amendments | 0 | (4,646) |
Settlements and Curtailments | 0 | 0 |
Currency translation and other | 0 | 98 |
Business divestitures | 0 | 0 |
Benefit obligation at end of year | 7,849 | 8,595 | 12,263
Change in Fair Value of Plan Assets [Roll Forward] |  |  |
Fair value of plan assets at beginning of year | 0 | 0 |
Actual return on plan assets | 0 | 0 |
Company contributions | 620 | 917 |
Plan participant's contributions |  | 0 |
Benefits paid | 620 | 917 |
Settlements and curtailments | 0 | 0 |
Foreign currency translation | 0 | 0 |
Fair value of plan assets at end of year | 0 | 0 | $ 0
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract] |  |  |
Funded (Unfunded) status | (7,849) | (8,595) |
Amounts Recognized in Balance Sheet [Abstract] |  |  |
Other assets and deferred charges | 0 | 0 |
Accrued compensation and employee benefits | 702 | 706 |
Other liabilities (deferred compensation) | 7,147 | 7,889 |
Total assets and liabilities | (7,849) | (8,595) |
Accumulated Other Comprehensive Loss (Earnings) [Abstract] |  |  |
Net actuarial losses (gains) | (1,164) | (748) |
Prior service cost (credit) | 71 | 84 |
Net asset at transition, other | 0 | 0 |
Deferred taxes | 412 | 322 |
Total Accumulated Other Comprehensive Loss (Earnings), net of tax | (681) | (342) |
Net amount recognized on the balance sheet | (8,530) | (8,937) |
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract] |  |  |
Prior service cost (credit) | 13 |  |
Recognized actuarial loss (gain) | (70) |  |
Transition obligation | 0 |  |
Amounts that will be amortized from accumulated other comprehensive earnings (loss) in next fiscal year | (57) |  |
Discontinued Operations [Member] | Pension Plan [Member] | Qualified Plan [Member] | Domestic Plan [Member] |  |  |
Amounts Recognized in Balance Sheet [Abstract] |  |  |
Total assets and liabilities | 0 | 0 |
Discontinued Operations [Member] | Pension Plan [Member] | Qualified Plan [Member] | Foreign Plan [Member] |  |  |
Amounts Recognized in Balance Sheet [Abstract] |  |  |
Total assets and liabilities | 0 | 112 |
Discontinued Operations [Member] | Supplemental Employee Retirement Plans, Defined Benefit [Member] | Nonqualified Plan [Member] |  |  |
Amounts Recognized in Balance Sheet [Abstract] |  |  |
Total assets and liabilities | 0 | (14,198) |
Discontinued Operations [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] |  |  |
Amounts Recognized in Balance Sheet [Abstract] |  |  |
Total assets and liabilities | $ 0 | $ 0 |

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