Verizon has already run that business on its own, so taking Vodafone out of the picture is not new territory.
Verizon's network has a good reputation after 13 years of focusing on performance, and McAdam said the goal is to maintain that level of quality.
"That does not change," he said.
The company will remain involved in future auctions for the frequencies that handle cell phone traffic.
And the company is seeking new growth.
The U.S. has a strong economy and there are many potential customers who have yet to make the transition to smartphones, McAdam said.
"We're very bullish on the growth outlook for the U.S. wireless marketplace," he said.
In the most recent quarter, Verizon Wireless added 941,000 devices to its contract-based plans, exceeding expectations and extended a strong run. But almost all of Verizon's wireless gains were customers upgrading to higher-priced plans or adding more devices, rather than an influx of new customers.
The outside advantage of the deal to acquire the U.S. stake is more flexibility for Verizon in expanding abroad. Vodafone has previously had authority to nix expansion under the terms of joint wireless venture.
Verizon said it expects regulators to approve the deal since it already controls its U.S. wireless business. It also needs shareholder approval. It expects the deal to close during the first quarter of next year.
Besides the wireless business, Verizon Communications Inc. sells home Internet service and traditional, landline phone service in some markets, along with business-to-business services. The company is angling increasingly to market those services together, McAdam said.
The New York company has long wanted to buy out its partner, but the two companies hadn't agreed on a price. Analysts said Verizon wanted to pay around $100 billion, while reports suggested Vodafone held firm for the final sale price of $130 billion.
McAdam said the deal will basically pay for itself as the profits from the wireless business covers expenses from interest and dividends on the stock Verizon will issue. He said the deal will boost Verizon's earnings per share by 10 percent right away.
Verizon needs to borrow some $61 billion to make the deal happen. Executives said they expect the company's debt rating to fall one notch, but that it will return to current levels over the next four to five years.
Company shares slid 4 percent, or $1.88, to $45.50 in early trading. Shares are still trading near a 12-year high.