The whole nine yards
Definition 1 of 1
Pro Tip 1/3Not Literal
The phrase doesn't mean nine actual yards; it's a figure of speech for 'everything possible'. 
For the wedding, they planned the whole nine yards - cake, music, decorations.
Pro Tip 2/3Informal Use
Use this phrase in casual conversations, rather than formal or academic writing. 
When he throws a party, he goes the whole nine yards, even hiring a DJ.
Pro Tip 3/3American Origin
The phrase is widely recognized and used in American English, but it's understood globally. 
In his new house, he got the whole nine yards - pool, garden, and garage.