Fair Value (Schedule of Carrying Values and Estimated Fair Values of Debt Instruments) (Details) (USD $) In Millions, unless otherwise specified	Jan. 02, 2015	Jun. 27, 2014
Carrying Amount [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	$ 3,932	$ 3,585
Carrying Amount [Member] | Senior Notes 3.75 Percent due November 2018 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	800	800
Carrying Amount [Member] | Senior Notes 6.875 Percent due May 2020 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	476	534
Carrying Amount [Member] | Senior Notes 7.00 Percent Due November 2021 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	158	251
Carrying Amount [Member] | Senior Notes 4.75 Percent Due June 2023 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	1,000	1,000
Carrying Amount [Member] | Senior Notes 4.75 Percent Due January 2025 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	1,000	1,000
Carrying Amount [Member] | Senior note 5.75 percent due December 2034 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	498	0
Fair Value, Total Balance [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	4,118	3,686
Fair Value, Total Balance [Member] | Senior Notes 3.75 Percent due November 2018 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	824	820
Fair Value, Total Balance [Member] | Senior Notes 6.875 Percent due May 2020 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	501	578
Fair Value, Total Balance [Member] | Senior Notes 7.00 Percent Due November 2021 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	174	284
Fair Value, Total Balance [Member] | Senior Notes 4.75 Percent Due June 2023 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	1,050	1,009
Fair Value, Total Balance [Member] | Senior Notes 4.75 Percent Due January 2025 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	1,032	995
Fair Value, Total Balance [Member] | Senior note 5.75 percent due December 2034 [Member]
Debt Fair Value Disclosures
Current and noncurrent debt including short-term borrowings	$ 537	$ 0