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Pension and Postretirement Benefit Plans - Net Periodic Benefit Cost - Footnotes (Details)
$ in Millions
3 Months Ended
Jul. 02, 2017
USD ($)
Jan. 01, 2018
pension_plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Number of pension plans frozen | pension_plan   2
Hospira [Member] | Pension Plan [Member] | U.S. [Member] | Qualified Plan [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Decrease in pension benefit obligation in connection with Hospira pension plan $ 156  
Pretax settlement gain 41  
Net pension benefit obligation $ 30