Annual report pursuant to Section 13 and 15(d)

Quarterly Information (Unaudited) - Quarterly Net Income, Basic Earnings Per Share and Diluted Earnings Per Share (Detail)

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Quarterly Information (Unaudited) - Quarterly Net Income, Basic Earnings Per Share and Diluted Earnings Per Share (Detail) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]                      
Net sales $ 1,220.3 [1] $ 1,244.5 $ 1,240.1 $ 1,172.2 $ 1,186.6 [1] $ 1,242.8 $ 1,285.5 $ 1,176.9 $ 4,877.1 $ 4,891.8 $ 4,427.7
Gross profit 990.5 [1] 1,001.1 996.9 930.6 960.7 [1] 1,024.7 1,050.1 937.0 3,919.1 3,972.5 3,579.1
Net income $ 56.7 $ 81.5 $ 76.5 $ 96.3 $ 48.9 $ 71.2 $ 94.4 $ 82.1 $ 311.0 $ 296.6 $ 213.9
Earnings per share:                      
Basic $ 0.41 [1] $ 0.59 $ 0.56 $ 0.70 $ 0.36 [1] $ 0.52 $ 0.66 $ 0.57 $ 2.26 $ 2.12 $ 1.35
Diluted $ 0.40 [1] $ 0.58 $ 0.54 $ 0.66 $ 0.34 [1] $ 0.49 $ 0.62 $ 0.54 $ 2.20 $ 1.98 $ 1.29
[1] The fourth quarter of 2019 includes a net favorable adjustment to our unrecognized tax benefit liability of $11.4 million primarily attributable to transfer pricing matters in various foreign jurisdictions, and a legal accrual of $40 million relating to the SEC and DOJ investigations relating to the FCPA matter in China as described further in Note 7, Contingencies. The fourth quarter of 2018 includes an unfavorable impact of U.S. Tax Reform enacted during the fourth quarter of 2017, as described further in Note 12, Income Taxes.