That document is for a separate service called Google Payments, which is strictly for business transactions as the terms indicate.
What I use is Google Wallet (<a rel="nofollow" target="_blank" href="
https://wallet.google.com/payments/apis-secure/get_legal_document?ldo=0&ldt=buyertos&ldr=US#SafeHtml...>). Although both services fall under the Google Payment Corp umbrella, they are two distinct services that serve distinct purposes.
If scroll down to section 5.2 of the terms I posted here, you'll see that they distinguish P2P payments and explain it a little better there.
