I prefer the term 'Valet' to be honest, detailing sounds a bit poncey,
Although they are both pretty much the same thing.
There are people who spend 10 minutes taking their car through the car wash, and then there are people who take more time and care for their car and do it all themselves.
Personally, this is my routine:
Rinse car with hose.
Wash car with Turtle Wax Zip Wash cleaner.
Dry car off with tea towels to prevent water marks.
Clean all glass with Turtle Wax glass cleaner (Inside and out)
Use 'Bumper Care' by Autoglym to bring up all exterior black rubber parts of car. (Trim etc)
Use Vinyl / Rubber care by Autoglym to clean all interior plastics such as dash, door cards, wheel, radio etc etc, vents.
Use leather care wipes by Turtle Wax to clean and bring up the condition of the seats / doorcards all round.
Go round car and use MER to polish up any marks around the car.
Then wax up using Turtle Wax spray wax.
Remove mats and clean them in the kitchen with an old scourer pad.
Vacuum complete interior of car, including boot.
Stick mats back in and job done.
And to be fair this is a pretty conservative valet really, some people on here do WAY more than this.
This takes me a few hours so not too bad.
Some people do a real valet and go over every inch of the car, in my book what's the point in completely getting it to showroom condition when a few days later it's gonna look like crap again?