Employee Benefit Plan - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) Employees	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income (loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Loss Recognized in Net Periodic Benefit Cost, After Tax	$ 1,758	$ 12,070	$ 10,625
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Loss, After Tax	(6,339)	3,795	740
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Actuarial Loss, After Tax	26,939	28,569
Defined Contribution Plan, Cost	20,523	13,627	13,432
Defined Contribution Plan, Employer Discretionary Contribution Amount	7,503	7,574	7,572
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		(16,706)
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	0	0
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(4,596)	(4,222)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	0	0
Defined Benefit Plan, Actuarial Loss [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year	$ 536
Current Arrow SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of Participants | Employees	10
Former Arrow SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of Participants | Employees	22
Wyle Defined Benefit Plan Expected Settlement [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	$ (25,500)
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost	$ 18,996	$ 18,815	$ 12,882