Long-Term Debt - Summary (Details)	Mar. 26, 2020 USD ($)
Unsecured Notes, 4.000%
Long-Term Debt
Unsecured notes, issued	$ 750,000,000
Unsecured notes, interest rate	4.00%
Unamortized discount	$ 4,000,000
Unsecured Notes, 4.500%
Long-Term Debt
Unsecured notes, issued	$ 1,250,000,000
Unsecured notes, interest rate	4.50%
Unamortized discount	$ 12,000,000
Unsecured Notes, 5.000%
Long-Term Debt
Unsecured notes, issued	$ 750,000,000
Unsecured notes, interest rate	5.00%
Unamortized discount	$ 10,000,000
Unsecured Notes, 5.125%
Long-Term Debt
Unsecured notes, issued	$ 1,250,000,000
Unsecured notes, interest rate	5.125%
Unamortized discount	$ 13,000,000
Unsecured Notes
Long-Term Debt
Unsecured notes, issued	$ 4,000,000,000.0