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Fair Value Measurements - Summary of Level 3 Fair Value Measurements of Contingent Consideration (Details) - Fair Value, Inputs, Level 3 - USD ($)
$ in Millions
9 Months Ended
Oct. 01, 2016
Jul. 02, 2016
Apr. 02, 2016
Jan. 02, 2016
Jan. 03, 2015
Contingent Consideration Liabilities          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Contingent Consideration Liabilities $ 40 $ 31 $ 36 $ 151 $ 50
Spinal Modulation | Contingent Consideration Liabilities          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Contingent Consideration Liabilities $ 7 2 6 122 0
Spinal Modulation | Monte Carlo Simulation          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Expected revenue volatility 25.00%        
Spinal Modulation | Monte Carlo Simulation | Minimum          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Discount Rate 0.80%        
Spinal Modulation | Monte Carlo Simulation | Maximum          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Discount Rate 15.50%        
Spinal Modulation | Monte Carlo Simulation | Contingent Consideration Liabilities          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Contingent Consideration Liabilities $ 7        
Nanostim | Contingent Consideration Liabilities          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Contingent Consideration Liabilities $ 2 2 2 2 50
Nanostim | Probability Weighted Discounted Cash Flow          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Discount Rate 5.00%        
Probability of Payments 10.00%        
Nanostim | Probability Weighted Discounted Cash Flow | Contingent Consideration Liabilities          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Contingent Consideration Liabilities $ 2        
Thoratec | Contingent Consideration Liabilities          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Contingent Consideration Liabilities $ 27 27 28 27 0
Thoratec | Probability Weighted Discounted Cash Flow          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Discount Rate 4.30%        
Thoratec | Probability Weighted Discounted Cash Flow | Minimum          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Probability of Payments 0.00%        
Thoratec | Probability Weighted Discounted Cash Flow | Maximum          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Probability of Payments 90.00%        
Thoratec | Probability Weighted Discounted Cash Flow | Contingent Consideration Liabilities          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Contingent Consideration Liabilities $ 27        
U.S. Distributor | Contingent Consideration Liabilities          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Contingent Consideration Liabilities $ 4 $ 0 $ 0 $ 0 $ 0
U.S. Distributor | Probability Weighted Discounted Cash Flow | Minimum          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Discount Rate 0.90%        
Probability of Payments 0.00%        
U.S. Distributor | Probability Weighted Discounted Cash Flow | Maximum          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Discount Rate 1.10%        
Probability of Payments 100.00%        
U.S. Distributor | Probability Weighted Discounted Cash Flow | Contingent Consideration Liabilities          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Contingent Consideration Liabilities $ 4