Debt (Summary of Components of Debt) (Details) - USD ($) $ in Millions	Sep. 28, 2018	Mar. 30, 2018
Debt Instrument [Line Items]
Total principal amount	$ 5,100	$ 5,100
Less: unamortized discount and issuance costs	(61)	(74)
Total debt	5,039	5,026
Current portion of long-term debt	(597)	0	[1]
Total long-term debt	4,442	5,026	[1]
Senior Notes | 4.2% Senior Notes due September 15, 2020
Debt Instrument [Line Items]
Total principal amount	$ 750	750
Stated interest rate (as a percent)	4.20%
Effective interest rate	4.25%
Senior Notes | 3.95% Senior Notes due June 15, 2022
Debt Instrument [Line Items]
Total principal amount	$ 400	400
Stated interest rate (as a percent)	3.95%
Effective interest rate	4.05%
Senior Notes | 5.0% Senior Notes due April 15, 2025
Debt Instrument [Line Items]
Total principal amount	$ 1,100	1,100
Stated interest rate (as a percent)	5.00%
Effective interest rate	5.23%
Unsecured Debt | Senior Term Loan A-2 due August 1, 2019
Debt Instrument [Line Items]
Total principal amount	$ 600	600
Unsecured Debt | Senior Term Loan A-5 due August 1, 2021
Debt Instrument [Line Items]
Total principal amount	$ 500	$ 500
Unsecured Debt | Senior Term Loan A-2 due August 1, 2019
Debt Instrument [Line Items]
Interest rate	3.69%	3.31%
Unsecured Debt | Senior Term Loan A-5 due August 1, 2021
Debt Instrument [Line Items]
Interest rate	3.92%	3.54%
Convertible Debt | 2.5% Convertible Senior Notes due April 1, 2021
Debt Instrument [Line Items]
Total principal amount	$ 500	$ 500
Stated interest rate (as a percent)	2.50%
Effective interest rate	3.76%
Convertible Debt | 2.0% Convertible Senior Notes due August 15, 2021
Debt Instrument [Line Items]
Total principal amount	$ 1,250	$ 1,250
Stated interest rate (as a percent)	2.00%
Effective interest rate	2.66%

[1] Derived from audited financial statements.