Equal in my house. We both work full time.
He is better at mornings than me so does most of the early starts and tends to do any night wakings (I breastfed so did the majority when they were tiny)
He does most of the school runs and driving to and from activities
I do all the cooking and meal planning
He does most of the 'official' admin (booking holiday clubs, after school and breakfast clubs, house bills etc), I do most of the unofficial admin (birthday parties, organising playdates, gifts for friends etc)
We have a cleaner as both hate housework but will share the in between bits of hoovering and tidying
Washing, I normally put it on, he normally folds, whoever is around puts it away
We both travel for work and the other one has to do everything while we are away
I don't think I'd be able to cope without this split of labour and work full time (health issues)
I didn't really think about it before we had kids, so ive been lucky, but his parents were the same. We also did shared paternity leave which I think stops one of you becoming the default parent or taking all responsibility for housework