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Fair Value Measurements - Contingent Consideration (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jul. 29, 2016 | Sep. 30, 2019 | Sep. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business Combination, Contingent Consideration, Liability, Estimate |  | $ 43 | $ 43
Contingent Consideration basis |  | 2,600 |
Liability [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Business Combination, Contingent Consideration, Liability, Current |  | 23 | 23
Assets [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Contingent Consideration basis |  |  | 4,100
Paid [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Contingent Consideration Commission payable |  | $ 20 | $ 20
Lattice |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Contingent Consideration | $ 60 |  |
Contingent Consideration Payment Period | 4 years |  |
Lattice | Contingent Obligations |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Discount Rate |  |  | 11.40%

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