Yes. So I'll start with the first one, Nigel. As I said, it's 70% weighted in the first half of the $250 million to $300 million range. In the first quarter, at a holdco basis, we did $122 million of restructuring that I've said in my announcement, and then you'll see Health Care was approximately $20 million of that. So you've got $100 million that is on a RemainCo basis. And so the balance is -- so you can get the math.
When I come to your next piece on payback, I just wanted to start again, I've said this before, I'll say it again, you have to look at restructuring in total. So when we started this program we said, there are multiple things we wanted to achieve. Number one was we wanted to change the way we work, and the way we achieved that was streamlining our supply chain, getting a shorter path to customers and third was reduce stranded cost, have a lighter center as well as create oxygen to invest in the business. And when we put that program together, that was including holdco.
As we have now spun out Health Care, you can see all those items starting to come in, which is margin expansions coming in. And that is happening because of the improvement we have in our supply chain and the way we work. It's happening because we are closer to customers. It's happening because we have reduced stranded cost.
When we started our journey and we announced the spin of Health Care, we had said industry benchmark was somewhere between 1% to 1.5% of sales, which is like $400 million to $450 million. And now our dis-synergies from the spinout of Health Care are the $150 million to $175 million, and we're going to keep working that, in some cases, grow into it; in some cases, we'll keep working it down. And you've seen we've been able to do that.
And at the same time, we've created oxygen to invest in the business. And Mike mentioned some of the spec-in wins that we have got in TEBG. We have continued to invest in CBG. In a downmarket, we have done the same with SIBG, and we had over 30 new launches across the company in the first quarter. So that's the way I would look at it.
On a payback basis, I would tell you that we are still continuing to have very good payback. And in fact, we were able to accelerate some of our restructuring actions as well as get some onetime gains like property sales in Q1. So overall, look at the total margin, 200 to 275 basis points up on a year-over-year basis, which is a reflection of all the actions the team has taken.