The For You hitmaker went under the knife in November (11) to remove a polyp on his vocal cords and he was subsequently placed on voice rest for several weeks and told to stay silent as part of his recovery.
The country star has since made his singing comeback and The Hours star Kidman has now opened up about the medical drama, joking their house was a lot quieter.
She tells W Magazine, ""Three weeks of no sound - no laughing, no coughing, no sneezing, nothing. He could write things down, and he would scribble away.""
Kidman reveals the two still argued, adding, ""You can still fight when someone can't talk. When he disagreed with me, he would write, 'This is unacceptable.'""
And she admits the silent treatment strengthened their marriage: ""All of those things make you closer. It was sort of profound to go without his voice, and then to finally hear his voice. What if he sounded different? I was there for his first words, and then we cried. How many people experience their husband's first words? If that doesn't bring you closer, you're not breathing.""