Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (917,496)	$ (1,170,868)	$ (521,415)
Components of other comprehensive income (loss):
Translation adjustment	(4,490)	5,638	(1,085)
Net change in derivatives (Note 13)	397	(1,764)	(4,739)
Net income (loss) on long-term pension liability adjustment	2,901	(64)	6,283
Unrealized gain on investments	0	(145)	0
Income taxes	50	565	326
Total other comprehensive income (loss)	(1,142)	4,230	785
Total comprehensive loss	(918,638)	(1,166,638)	(520,630)
Comprehensive loss attributable to noncontrolling interests and redeemable noncontrolling interests	106,405	241,747	72,780
Comprehensive loss attributable to stockholders	$ (812,233)	$ (924,891)	$ (447,850)