Segment Reporting - Percentage of Accounts Receivable by Significant Customers (Detail) - Customer Concentration Risk - Sales Revenue	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
GE Healthcare
Concentration Risk [Line Items]
Revenue from significant customers		13.00%
MilliporeSigma
Concentration Risk [Line Items]
Revenue from significant customers	14.00%	16.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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