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Employee Benefits (Details 2) - USD ($) $ in Millions		12 Months Ended
	Jan. 02, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net periodic cost
Weighted-average healthcare cost rate		5.00%
Effects created by one percentage point change in assumed healthcare cost trend
Effect of 1% point increase on postretirement obligation		$ 5
Effect of 1% point decrease on postretirement obligation		$ (4)
Retirement Plans [Member]
Benefit obligation
Discount rate		4.15%	5.00%	4.10%
Net periodic cost
Discount rate		5.00%	4.10%	5.10%
Compensation increase factor				4.50%
Return on assets		7.125%	7.25%	7.75%
Postretirement Plans [Member]
Benefit obligation
Discount rate		3.60%	4.20%	3.45%
Net periodic cost
Weighted-average healthcare cost rate		7.00%	7.00%	7.50%
Discount rate		4.125%	3.45%	4.45%
United Kingdom Retirement Plan [Member]
Net periodic cost
Discount rate		4.50%	4.80%	5.10%
Compensation increase factor			5.75%	5.85%
Return on assets		6.75%
United States Pension Plan of US Entity [Member]
Net periodic cost
Discount rate		5.00%
Subsequent Event [Member] | Retirement Plans [Member]
Net periodic cost
Return on assets	6.25%
Subsequent Event [Member] | United Kingdom Retirement Plan [Member]
Net periodic cost
Discount rate	3.80%
Return on assets	6.25%
Subsequent Event [Member] | United States Pension Plan of US Entity [Member]
Net periodic cost
Discount rate	4.15%

X

- Definition

The interest rate used to adjust for the time value of money for the plan.

+ References

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-Name Accounting Standards Codification



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An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

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-Name Accounting Standards Codification



-Glossary Expected Long-Term Rate of Return on Plan Assets



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Expected rate of compensation increases (for pay-related plans).

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Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

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