It can be different in different years. In 2018, it was NBC.
See this page to find past broadcasters: en.wikipedia.org/wiki/List_of_Super_Bowl_broadcasters
NBC is the network for Super Bowl XLIII.
CBS
FOX
NBC
CBS
The Television network that wins the Bid to broadcast the Super Bowl pays the NFL. The TV network makes their money through Commercials. The consumer that buys the products from the companies that buy commercial time for the Super Bowl pays for everything.
In the United States, the Super Bowl is being broadcast over 'free' TV on the FOX network.
The 2015 Super Bowl network has not yet been announced. Usually the Super Bowl will air on either FOX or CBS.
ESPN Israel, METV
ARD
SAT 1
In the US the game will be shown on NBC starting at 6pm.