Quarterly report pursuant to Section 13 or 15(d)

Debt, Secured Revolving Facility and Secured Revolving Line of Credit (Interest Expense Recognized) (Details)

v3.19.2
Debt, Secured Revolving Facility and Secured Revolving Line of Credit (Interest Expense Recognized) (Details) - 2.125% Convertible Senior Notes due 2026 - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Debt Instrument [Line Items]        
Contractual interest expense $ 4 $ 4 $ 8 $ 9
Interest cost related to amortization of debt issuance costs 0 0 1 1
Interest cost related to amortization of the debt discount $ 6 $ 6 $ 12 $ 12