Stock-Based Compensation - PSUs (Details) - $ / shares shares in Thousands		12 Months Ended
		Dec. 31, 2016		Dec. 31, 2015		Dec. 28, 2014
PSUs
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Grants in period, shares		295		66		55
Grants in period, Weighted Average Fair Value		$ 21.26		$ 68.10		$ 79.16
Forfeitures in Period, shares		(8)		(17)		(11)
Forfeitures in Period, Weighted Average Fair Value		$ 49.85		$ 64.89		$ 75.92
Adjustment due to Publishing Spin-off, shares						(1)
Adjustment due to the Special Cash Dividend	[1]			12
Vested in period, shares		(56)
Vested and issued in period, Weighted Average Fair Value		$ 65.06
Outstanding, shares		347	[2]	107	[1],[2]	43
Outstanding, Weighted Average Fair Value		$ 27.23	[2]	$ 65.50	[1],[2]	$ 74.35
Outstanding and nonvested, Weighted Average Remaining Contractual Term (in years)		1 year 26 days	[2]	7 months 13 days	[1],[2]	1 year 4 months
PSU Dividend Equivalent Unit (DEU)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Grants in period, shares		10		3
Grants in period, Weighted Average Fair Value		$ 37.50		$ 41.86
Dividend Equivalent Units Vested		(1)
Dividend Equivalent Unit Weighted Average Vested Fair Value		$ 41.64

[1] (1) Represents shares of PSUs for which performance targets have been established and which are deemed granted under U.S. GAAP.

[2] (2) The weighted average fair value of outstanding PSUs reflect the adjustment for the Special Cash Dividend