Fair Value Measurements (Tables)

12 Months Ended

Dec. 28, 2012

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 $742 million and $643 million as of December 28, 2012 and December 30, 2011, respectively.

	Fiscal Years
	2012								2011
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Certificates of Deposit	$	—	$	555	$	—	$	555	$	—	$	477	$	—	$	477
Corporate Bonds	—		142		—		142		—		98		—		98
U.S. Treasury Obligations	—		31		—		31		—		53		—		53
Auction Rate Securities	—		—		15		15		—		—		15		15
Total investments at fair value	$	—	$	728	$	15	$	743	$	—	$	628	$	15	$	643

Schedule of investment maturities

These investments have the following maturities:

(Dollars in Millions)	December 2012		December 2011
Less than 1 year	$	587	$	523
1 - 2 years	61		32
2 - 5 years	76		73
Greater than 5 years	19		15
Total investments at fair value	$	743	$	643

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 2012		December 2011
Long-term Debt (Including Current Maturities):
Fair Value	$	11,562	$	10,708
Carrying Value	$	9,832	$	9,241

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 2012 and 2011:

	Fiscal Years
	2012								2011
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Common Stock:
Information technology	$	169	$	—	$	—	$	169	$	137	$	—	$	—	$	137
Consumer discretionary	125		—		—		125		88		—		—		88
Health care	96		—		—		96		70		—		—		70
Financials	83		—		—		83		53		—		—		53
Industrials	78		—		—		78		65		—		—		65
Energy	58		—		—		58		61		—		—		61
Consumer staples	55		—		—		55		42		—		—		42
Materials	25		—		—		25		24		—		—		24
Other	33		—		—		33		16		—		—		16
Mutual funds	17		—		—		17		15		—		—		15
Corporate bonds	—		606		—		606		—		595		—		595
Common trust funds	—		426		—		426		—		367		—		367
Partnerships	—		296		—		296		—		175		—		175
Government securities	—		178		—		178		—		126		—		126
Asset-backed securities	—		28		—		28		—		10		—		10
Cash equivalents	—		20		—		20		—		—		—		—
Derivatives and other	—		1		—		1		—		6		—		6
Total investments at     fair value	$	739	$	1,555	$	—	$	2,294	$	571	$	1,279	$	—	$	1,850