Casualty, Environmental and Other Reserves (Occupational and Asbestos Claims) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2012 claims	Dec. 30, 2011 claims
Occupational Casualty and Asbestos Issues [Member]
Loss Contingency, Claims Quantities [Roll Forward]
Open Claims - Beginning of Year	746	1,376
New Claims Filed	160	224
Claims Settled	(154)	(370)
Claims Dismissed	(229)	(484)
Open Claims - End of Year	523	746
Occupational [Member]
Loss Contingencies [Line Items]
Time period for estimating probable claims (in years)	7 years
Undiscounted liabilities related to occupational and asbestos claims	36	43
Occupational [Member] | Incurred but not reported claims [Member]
Loss Contingencies [Line Items]
Undiscounted liabilities related to occupational and asbestos claims	24	26
Occupational [Member] | Asserted claims [Member]
Loss Contingencies [Line Items]
Undiscounted liabilities related to occupational and asbestos claims	12	17
Asbestos [Member]
Loss Contingencies [Line Items]
Undiscounted liabilities related to occupational and asbestos claims	56	68
Asbestos [Member] | Incurred but not reported claims [Member]
Loss Contingencies [Line Items]
Undiscounted liabilities related to occupational and asbestos claims	37	42
Asbestos [Member] | Asserted claims [Member]
Loss Contingencies [Line Items]
Undiscounted liabilities related to occupational and asbestos claims	19	26
Carpal Tunnel Claims [Member]
Loss Contingencies [Line Items]
Time period for estimating probable claims (in years)	3 years
Minimum [Member] | Asbestos [Member]
Loss Contingencies [Line Items]
Loss contingency, latency period (in years)	10 years
Maximum [Member] | Asbestos [Member]
Loss Contingencies [Line Items]
Loss contingency, latency period (in years)	40 years