Cook told Reuters that Apple has 620 million paying subscribers on its platform, ahead of its goal to have 600 million subscribers by the end of 2020.
The services segment also includes sales from Apple's App Store, whose billing practices have become a flashpoint of conflict with "Fortnite" creator Epic Games and whose privacy rules have ticked off a public spat with Facebook Inc.
Apple's wearables and accessories segment, which includes the Apple Watch and AirPods product lines, hit $12.97 billion in revenue, versus analyst estimates of $11.96 billion. Apple in December released the AirPods Max, a $550 set of over-ear wireless headphones, with shipment dates stretching months into the future within hours of the product's launch. Cook said short supplies of the AirPods Max could continue into the company's current fiscal second quarter.