You already know Verizon Communications (VZ 0.88%) is a huge cash machine. The all-American telecommunications company generated $2.4 billion in free cash flow and $45 billion in EBITDA profits over the last four quarters, culled from a $123 billion revenue stream.

But do you know exactly how all of these dollars are being herded into Verizon's coffers? Let's review.

A cell phone tower, equipped with many antenna dishes, set against a partly cloudy sky.

Image source: Getty Images.

Verizon by the numbers

Verizon structures its financial results under two operating segments:

  • The wireless division provides wireless voice and data services to consumer, business, and government customers in the United States. It is one of the two largest wireless networks in the country next to AT&T, with 114.5 million retail subscribers at the end of June 2017.
  • The wireline segment offers voice, data, and video products and services over landline connections, both in the U.S. and abroad. This business serves up 13.4 million landline voice connections, 5.7 million Verizon Fios broadband customers, and 4.7 million Fios video subscribers.

As you might have guessed after seeing the lopsided subscriber balance between Verizon's two divisions, the wireless and wireline segments provide wildly different contributions to Big Red's financial results:

Business Segment

Q2 2017 Revenue

Revenue Growth (YOY)

Q2 2017 Operating Income

Wireless

$21.3 billion

(1.9%)

$7.4 billion

Wireline

$7.8 billion

1.2%

$68 million

Data source: Verizon SEC filings. YOY = year over year.

What's next?

Of course, this is just a snapshot of a large company constantly changing its business mix and future plans.

In 2016, Verizon sold its wireline operations in Texas, California, and Florida to smaller telecom Frontier Communications (FTR). The move reduced Verizon's Fios services and and landline phone footprint by roughly 25%. This was probably a wise move, judging by the way Fios subscribers have been slipping away under Frontier's management. Not even high-quality wireline services are an easy sell these days.

On the wireless side, the rampant two-stage growth of ubiquitous cellphone adoption and then smartphones for everyone has essentially stopped. Verizon's retail subscriber count increased by 1.2% in the second quarter compared to the year-ago period. At the same time, average revenue per contract customer fell by 7%. Nothing comes easy these days for Verizon -- the wireless market is getting saturated and price-sensitive.

So the company is branching out in new directions. Verizon has tried its hand at several media publishing operations in recent years, including the high-priced acquisitions of AOL and Yahoo!. A streaming video service partnership with Redbox was killed in its infancy, but Big Red is planning another streaming video launch later this year.

The wireless business should get a second wind as Verizon rolls out a next-generation 5G network over the next several years, paired with exploding demand for connections related to the Internet of Things. The Verizon we'll see in 10 years should look very different from the business under that name today.

But now you know how Verizon is making money in 2017, at least.