XML 47 R36.htm IDEA: XBRL DOCUMENT v3.7.0.1
Debt and Secured Revolving Line of Credit (Interest Expense Recognized) (Details) - 2.125% Convertible Senior Notes Due 2026 [Member] - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 01, 2017
Jul. 01, 2017
Debt Instrument [Line Items]    
Contractual interest expense $ 5 $ 9
Interest cost related to amortization of debt issuance costs 0 1
Interest cost related to amortization of the debt discount $ 5 $ 11