Quarterly report pursuant to Section 13 or 15(d)

Goodwill - Fair Value Measurement Inputs and Valuation Techniques For Goodwill (Detail)

v3.20.1
Goodwill - Fair Value Measurement Inputs and Valuation Techniques For Goodwill (Detail) - Publishing [Member]
Mar. 31, 2020
Dec. 31, 2019
Measurement Input Risk Adjusted Discount Rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Intangible asset measurement input percentage 10.5 10.0
Measurement Input, Long-term Revenue Growth Rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Intangible asset measurement input percentage 0.5 0.5
Minimum [Member] | Measurement Input Operating Profit Margin [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Intangible asset measurement input percentage 0.0 1.5
Maximum [Member] | Measurement Input Operating Profit Margin [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Intangible asset measurement input percentage 3.9 3.9