Fair Value Measurements (Tables)

12 Months Ended

Dec. 27, 2013

Fair Value Disclosures [Abstract]

Schedule of fair value of investment assets

The Company's investment assets are carried at fair value on the consolidated balance sheets as summarized in the table below. Additionally, the amortized cost basis of investments was $668 million and $742 million as of December 27, 2013 and December 28, 2012, respectively.

	Fiscal Years
	2013								2012
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Certificates of Deposit and Commercial Paper	$	—	$	472	$	—	$	472	$	—	$	555	$	—	$	555
Corporate Bonds	—		132		—		132		—		142		—		142
Government Securities	—		49		—		49		—		31		—		31
Auction Rate Securities	—		—		15		15		—		—		15		15
Total investments at fair value	$	—	$	653	$	15	$	668	$	—	$	728	$	15	$	743

Schedule of investment maturities

These investments have the following maturities:

(Dollars in Millions)	December 2013		December 2012
Less than 1 year	$	487	$	587
1 - 2 years	58		61
2 - 5 years	105		76
Greater than 5 years	18		19
Total investments at fair value	$	668	$	743

Schedule of fair value and carrying value of long-term debt

The fair value and carrying value of the Company's long-term debt is as follows:

(Dollars in Millions)	December 2013		December 2012
Long-term Debt (Including Current Maturities):
Fair Value	$	10,354	$	11,562
Carrying Value	9,555		9,832

Schedule of pension plan assets at fair value by level

The pension plan assets at fair value by level, within the fair value hierarchy, as of calendar plan years 2013 and 2012:

	Fiscal Years
	2013								2012
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Common Stock:
Information technology	$	173	$	—	$	—	$	173	$	169	$	—	$	—	$	169
Consumer discretionary	152		—		—		152		125		—		—		125
Health care	126		—		—		126		96		—		—		96
Financials	116		—		—		116		83		—		—		83
Industrials	108		—		—		108		78		—		—		78
Energy	59		—		—		59		58		—		—		58
Consumer staples	43		—		—		43		55		—		—		55
Materials	29		—		—		29		25		—		—		25
Other	31		—		—		31		33		—		—		33
Mutual funds	17		—		—		17		17		—		—		17
Corporate bonds	—		568		—		568		—		606		—		606
Common trust funds	—		553		—		553		—		426		—		426
Partnerships	—		314		—		314		—		296		—		296
Government securities	—		186		—		186		—		178		—		178
Asset-backed securities	—		24		—		24		—		28		—		28
Cash equivalents	—		—		—		—		—		20		—		20
Derivatives and other	—		1		—		1		—		1		—		1
Total investments at     fair value	$	854	$	1,646	$	—	$	2,500	$	739	$	1,555	$	—	$	2,294