Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019
Statement of Cash Flows [Abstract]
Net earnings (loss)	$ (100,708)	$ 40,160
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation of plant and equipment	56,587	62,408
Amortization of intangibles	71,513	23,631
Asset impairments	40,878	0
Program cost amortization	182,821	30,077
Deferred income taxes	(11,086)	(15,236)
Stock-based compensation	26,130	15,894
Non-cash pension settlement	0	110,777
Other non-cash items	7	(8,241)
Change in operating assets and liabilities net of acquired balances:
Decrease in accounts receivable	721,973	431,557
Increase in inventories	(125,356)	(119,647)
Increase in prepaid expenses and other current assets	(40,190)	(33,073)
Program production costs, net	(220,376)	(59,417)
Decrease in accounts payable and accrued liabilities	(344,414)	(134,574)
Change in net deemed repatriation tax	0	(14,550)
Other	560	6,510
Net cash provided by operating activities	258,339	336,276
Cash flows from investing activities:
Additions to property, plant and equipment	(64,009)	(58,195)
Acquisitions, net of cash acquired	(4,403,929)	0
Other	13,152	(2,281)
Net cash utilized by investing activities	(4,454,786)	(60,476)
Cash flows from financing activities:
Proceeds from borrowings with maturity greater than three months	1,023,453	0
Repayments of borrowings with maturity greater than three months	(98,193)	0
Net (repayments of) proceeds from other short-term borrowings	(4,480)
Net (repayments of) proceeds from other short-term borrowings		3,095
Purchases of common stock	0	(58,633)
Stock-based compensation transactions	1,830	25,779
Dividends paid	(186,243)	(164,908)
Payments related to tax withholding for share-based compensation	(5,669)	(11,889)
Redemption of equity instruments	(47,399)	0
Deferred acquisition payments	0	(100,000)
Other	(4,835)	0
Net cash provided (utilized) by financing activities	678,464	(306,556)
Effect of exchange rate changes on cash	(24,370)	(573)
Decrease in cash, cash equivalents and restricted cash	(3,542,353)	(31,329)
Cash, cash equivalents and restricted cash at beginning of year	4,580,369	1,182,371
Cash, cash equivalents and restricted cash at end of period	1,038,016	1,151,042
Cash paid during the period for:
Interest	81,456	40,807
Income taxes	$ 30,449	$ 40,014