Debt and Credit Agreements (Tables)

12 Months Ended

Dec. 27, 2013

Debt Disclosure [Abstract]

Schedule of long-term debt instruments

Debt was as follows:

	Maturity at December	Average Interest Rates at December	December			December
(Dollars in Millions)	2013	2013	2013			2012
Notes	2014-2044	5.7%	$	8,935		$	9,151
Equipment Obligations(a)	2014-2023	7.3%	602			667
Capital Leases	2014-2026	8.1%	16			12
Convertible Debentures	2021	1.0%	2			2
Subtotal Long-term Debt (including current portion)			$	9,555		$	9,832
Less Debt Due within One Year			(533		)	(780		)
Long-term Debt (excluding current portion)			$	9,022		$	9,052

(a) These obligations are secured by an interest in certain railroad equipment.

Schedule of long-ter debt maturities

Long-term Debt Maturities

(Dollars in Millions)	Maturities as of
Fiscal Years Ending	December 2013
2014	$	533
2015	629
2016	22
2017	631
2018	619
Thereafter	7,121
Total Long-term Debt Maturities (including current portion)	$	9,555