Revenue

3 Months Ended

Mar. 31, 2022

Revenue Recognition [Abstract]

Revenue

4.  Revenue

Net sales by geography are as follows (in millions):

	Three Months Ended
	March 31,
	2022		2021
United States	$	941.2	$	889.2
International		722.0		712.2
Total	$	1,663.2	$	1,601.4

Net sales by product category are as follows (in millions):

	Three Months Ended
	March 31,
	2022		2021
Knees	$	662.8	$	614.3
Hips		451.0		447.0
S.E.T.		416.8		417.6
Other		132.6		122.5
Total	$	1,663.2	$	1,601.4

S.E.T. includes sales from our Sports Medicine, Extremities, Trauma, Craniomaxillofacial and Thoracic product categories.  Other includes sales from our Technology, Surgical and Bone Cement product categories.

This net sales presentation differs from our reportable operating segments, which are based upon our senior management organizational structure and how we allocate resources toward achieving operating profit goals.  Each of our reportable operating segments sells all the product categories noted above.  Accordingly, the only difference from the presentation above and our reportable operating segments are the geographic groupings.