Debt (Details) - USD ($) $ in Millions	Jun. 28, 2015	Jan. 30, 2015	Dec. 28, 2014	Apr. 01, 2013
Debt Instrument [Line Items]
Total Long-term debt	$ 13,636		$ 13,597
Less portion due within one year	(10)		(11)
Long-term debt	$ 13,626		$ 13,586
Long-term debt, weighted average interest rate	4.21%		4.02%
$2.95 billion Term B-1 Loan
Debt Instrument [Line Items]
Total Long-term debt	$ 2,123		$ 2,769
$6.55 billion Term B-2 Loan
Debt Instrument [Line Items]
Total Long-term debt	4,283		5,588
4.25% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 3,100		3,100	$ 3,100
Stated interest rate	4.25%			4.25%
4.875% Second Lien Senior Notes Due 2025
Debt Instrument [Line Items]
Total Long-term debt	$ 2,000	$ 2,000	0
Stated interest rate	4.875%	4.875%
Other US Dollar Debt Due May 2013 Through November 2034 [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 10		10
Other US Dollar Debt Due May 2013 Through May 2023 [Member]
Debt Instrument [Line Items]
Total Long-term debt	46		53
US Dollar Notes Due September 2016, 2 Percent [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 58		58
Stated interest rate	2.00%
US Dollar Notes Due March 2017, 1.5 Percent [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 18		18
Stated interest rate	1.50%
US Dollar Notes Due September 2021, 3.125 Percent [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 34		34
Stated interest rate	3.125%
2.85% U.S. Dollar Notes Due March 2022 [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 6		6
Stated interest rate	2.85%
US Dollar Debentures Due July 2028, 6.375 Percent [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 256		257
Stated interest rate	6.375%
British Pound Notes Due February 2030, 6.25 Percent [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 207		206
Stated interest rate	6.25%
US Dollar Notes Due March 2032, 6.75 Percent [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 474		475
Stated interest rate	6.75%
US Dollar Notes Due August 2039, 7.125 Percent [Member]
Debt Instrument [Line Items]
Total Long-term debt	$ 1,021		$ 1,023
Stated interest rate	7.125%
Minimum | Other US Dollar Debt Due May 2013 Through November 2034 [Member]
Debt Instrument [Line Items]
Stated interest rate	0.94%
Minimum | Other US Dollar Debt Due May 2013 Through May 2023 [Member]
Debt Instrument [Line Items]
Stated interest rate	3.50%
Maximum | Other US Dollar Debt Due May 2013 Through November 2034 [Member]
Debt Instrument [Line Items]
Stated interest rate	7.96%
Maximum | Other US Dollar Debt Due May 2013 Through May 2023 [Member]
Debt Instrument [Line Items]
Stated interest rate	11.00%