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Fair Value Measurements - Summary of Hierarchy for Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Apr. 02, 2017
Jan. 01, 2017
Assets:    
Available-for-sale securities $ 797 $ 824
Debt securities in government sponsored entities [Member]    
Assets:    
Available-for-sale securities 31 34
Corporate debt securities [Member]    
Assets:    
Available-for-sale securities 463 476
U.S. Treasury securities [Member]    
Assets:    
Available-for-sale securities 303 314
Fair Value, Measurements, Recurring [Member]    
Assets:    
Deferred compensation plan assets 32 31
Total assets measured at fair value 1,518 1,241
Liabilities:    
Acquisition related contingent consideration liabilities 3 4
Deferred compensation liability 30 29
Total liabilities measured at fair value 33 33
Fair Value, Measurements, Recurring [Member] | Debt securities in government sponsored entities [Member]    
Assets:    
Available-for-sale securities 31 34
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member]    
Assets:    
Available-for-sale securities 463 476
Fair Value, Measurements, Recurring [Member] | U.S. Treasury securities [Member]    
Assets:    
Available-for-sale securities 303 314
Fair Value, Measurements, Recurring [Member] | Money market funds (cash equivalents) [Member]    
Assets:    
Money market funds (cash equivalents) 689 386
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]    
Assets:    
Total assets measured at fair value 992 700
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. Treasury securities [Member]    
Assets:    
Available-for-sale securities 303 314
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Money market funds (cash equivalents) [Member]    
Assets:    
Money market funds (cash equivalents) 689 386
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]    
Assets:    
Deferred compensation plan assets 32 31
Total assets measured at fair value 526 541
Liabilities:    
Deferred compensation liability 30 29
Total liabilities measured at fair value 30 29
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Debt securities in government sponsored entities [Member]    
Assets:    
Available-for-sale securities 31 34
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Corporate debt securities [Member]    
Assets:    
Available-for-sale securities 463 476
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]    
Liabilities:    
Acquisition related contingent consideration liabilities 3 4
Total liabilities measured at fair value $ 3 $ 4