Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 25, 2016
Letters of Credit and Other Related Instruments [Abstract]
Unused open letters of credit and related instruments	$ 36,500	$ 42,100
Other Commitments [Line Items]
Additional royalty guarantees Company may be subject to contingent upon the quantity and types of theatrical movie releases	$ 50,000
Period Company is subject to the additional royalty guarantees, maximum	four years
Amount of outstanding purchase commitments	$ 740,318
Royalties [Member]
Other Commitments [Line Items]
Prepaid Royalties	81,586
2018 Commitments	78,290
2019 Commitments	61,181
2020 Commitments	20,171
2021 Commitments	27,046
2022 Commitments	27,046
2023+ Commitments	15,859
Royalties [Member] | Prepaid Expenses and Other Current Assets [Member]
Other Commitments [Line Items]
Prepaid Royalties	31,444
Royalties [Member] | Other Assets [Member]
Other Commitments [Line Items]
Prepaid Royalties	50,142
Cartamundi Manufacturing Agreement [Member]
Other Commitments [Line Items]
2018 Commitments	110,827
2019 Commitments	104,626
2020 Commitments	82,917
Tax Sharing Agreement [Member]
Other Commitments [Line Items]
Future payments Company is obligated to pay joint venture partner under a tax sharing agreement	41,000
Range of tax sharing payments each year, minimum	4,500
Range of tax sharing payments each year, maximum	$ 7,100
Range of years for the tax sharing payments, first year	2018
Range of years for the tax sharing payments, last year	2022
Aggregate payment for all years occurring thereafter	$ 14,700