Quarterly report pursuant to Section 13 or 15(d)

Investments (Details)

v3.10.0.1
Investments (Details) - USD ($)
$ in Millions
Mar. 30, 2018
Dec. 31, 2017
Schedule of Equity and Debt Securities [Line Items]    
Cost Method Investments   $ 143
Accounting Standards Update 2016-01 [Member]    
Schedule of Equity and Debt Securities [Line Items]    
Cumulative Effect of New Accounting Principle in Period of Adoption $ 409