Fair Value (Schedule of Carrying Values and Estimated Fair Values of Debt Instruments) (Details) (USD $)
In Millions, unless otherwise specified
Apr. 03, 2015
Jun. 27, 2014
Carrying Amount [Member]    
Debt Fair Value Disclosures    
Current and noncurrent debt including short-term borrowings $ 3,931 $ 3,920
Carrying Amount [Member] | Senior Notes 6.8 Percent due October 2016 [Member]    
Debt Fair Value Disclosures    
Current and noncurrent debt including short-term borrowings 0 335
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 474 534
Carrying Amount [Member] | Senior Notes 7.00 Percent Due November 2021 [Member]    
Debt Fair Value Disclosures    
Current and noncurrent debt including short-term borrowings 159 251
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 4,130 4,060
Fair Value, Total Balance [Member] | Senior Notes 6.8 Percent due October 2016 [Member]    
Debt Fair Value Disclosures    
Current and noncurrent debt including short-term borrowings 0 374
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 832 820
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 492 578
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 172 284
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 1,052 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 1,040 995
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 $ 542 $ 0