Shareholders Equity Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Dec. 31, 2019	Dec. 31, 2019		Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax		$ (245,705)	$ (245,705)		$ (266,327)	$ (104,931)
Accumulated other comprehensive loss		(262,211)	(262,211)		(299,449)	(124,883)
Foreign Currency Translation Adjustment and Other, Net			20,622		(161,396)
Unrealized Gain (loss) on Investment Securities, Net			0		0	8,852
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net			10,368		0	0
Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net			(7,787)		931	(2,359)
Employee Benefit Plan Items, Net			14,035		8,253	8,853
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent			37,238		(174,566)
Reclassification to Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign Currency Translation Adjustment and Other, Net	[1]				0
Unrealized Gain (loss) on Investment Securities, Net	[2]				(14,946)
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net	[2]				0
Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net	[2]				(1,185)
Employee Benefit Plan Items, Net	[2]				(6,223)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	[2]				(22,354)
Other comprehensive income (loss) before reclassifications [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign Currency Translation Adjustment and Other, Net	[1]		7,658		(161,359)
Unrealized Gain (loss) on Investment Securities, Net			0		0
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net			16,489		0
Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net			(8,767)		0
Employee Benefit Plan Items, Net			(3,079)		4,939
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	[1]		12,301		(156,420)
Amounts reclassified into income (loss) [Domain]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign Currency Translation Adjustment and Other, Net			12,964	[3]	(37)
Unrealized Gain (loss) on Investment Securities, Net			0		0
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net			(6,121)		0
Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net			980		931
Employee Benefit Plan Items, Net			17,114	[3]	3,314
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent			24,937	[3]	4,208
Unrealized Gain (Loss) on Investment Securities, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss		0	0		0	14,946
Unrealized Gain (loss) on Investment Securities, Net			0		(14,946)
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net					0
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net [Domain]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss		10,368	10,368		0	0
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net			10,368
Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss		(13,347)	(13,347)		(5,560)	(5,306)
Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net			(7,787)		(254)
Employee Benefit Plan Items, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss		(13,527)	(13,527)		(27,562)	(29,592)
Employee Benefit Plan Items, Net			14,035		2,030
Intra-entity foreign currency transactions [Member] | Other comprehensive income (loss) before reclassifications [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign Currency Translation Adjustment and Other, Net			(10,630)		11,712
Reclassification of cumulative translation adjustments to earnings upon sale [Member] | Amounts reclassified into income (loss) [Domain]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign Currency Translation Adjustment and Other, Net			19,602
Wyle Defined Benefit Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		$ (20,111)	(20,111)		$ 0	$ (16,706)
Wyle Defined Benefit Plan [Member] | Amounts reclassified into income (loss) [Domain]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Employee Benefit Plan Items, Net			$ (15,257)

[1] Foreign currency translation adjustment includes intra-entity foreign currency transactions that are of a long-term investment nature of $(10,630) and $11,712 for 2019 and 2018, respectively.

[2] Amount relates to unrealized gains and losses on investments and stranded tax effects reclassified from “Accumulated other comprehensive income” to “Retained earnings” in accordance with ASU No. 2018-02 and ASU No. 2016-01.

[3] Foreign currency translation adjustment includes a reclassification of cumulative translation adjustments to earnings upon the sale of three foreign subsidiaries during 2019 of $19,602 (Note 3). Employee Benefit Plan items, net includes a pre-tax pension settlement expense of $20,111 ($15,257 net of tax) for 2019 (Note 14).