Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 508,363	$ 428,501	$ 436,258	$ 439,062	$ 502,744	$ 417,346	$ 414,560	$ 413,948	$ 1,812,184	$ 1,748,598	$ 1,675,639
Subscription
Disaggregation of Revenue [Line Items]
Revenues									1,083,851	1,042,571	1,008,431
Advertising
Disaggregation of Revenue [Line Items]
Revenues									530,678	558,253	558,513
Other
Disaggregation of Revenue [Line Items]
Revenues									197,655	147,774	108,695
Print subscription
Disaggregation of Revenue [Line Items]
Revenues									623,399	641,951	668,088
News Products
Disaggregation of Revenue [Line Items]
Revenues									426,125	378,484	325,956
Other product subscription revenues
Disaggregation of Revenue [Line Items]
Revenues									34,327	22,136	14,387
Digital-Only Subscription Revenue
Disaggregation of Revenue [Line Items]
Revenues									1,083,851	1,042,571	1,008,431
Display
Disaggregation of Revenue [Line Items]
Revenues									429,825	471,198	484,337
Other
Disaggregation of Revenue [Line Items]
Revenues									100,853	87,055	74,176
Print | Advertising
Disaggregation of Revenue [Line Items]
Revenues									270,224	299,380	320,222
Print | Display
Disaggregation of Revenue [Line Items]
Revenues									240,723	269,160	285,679
Print | Other
Disaggregation of Revenue [Line Items]
Revenues									29,501	30,220	34,543
Digital | Advertising
Disaggregation of Revenue [Line Items]
Revenues									260,454	258,873	238,291
Digital | Display
Disaggregation of Revenue [Line Items]
Revenues									189,102	202,038	198,658
Digital | Other
Disaggregation of Revenue [Line Items]
Revenues									71,352	56,835	39,633
Digital
Disaggregation of Revenue [Line Items]
Revenues									801,000	709,000	620,000
Building Real Estate
Disaggregation of Revenue [Line Items]
Revenues									$ 31,000	$ 23,000	$ 17,000