Receivables Trade and Other Accounts Receivable (Policies)	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Accounts Receivable [Policy Text Block]	Client receivables primarily represent recorded revenues that have either been billed, or for which we have an unconditional right to invoice and receive payment in the future. We periodically provide long-term financing options to creditworthy clients through extended payment terms. Generally, these extended payment terms provide for date-based payments over a fixed period, not to exceed the term of the overall arrangement. Thus, our portfolio of client contracts contains a financing component, which is recognized over time as a component of "Other income (loss), net" in our consolidated statements of operations. We perform ongoing credit evaluations of our clients and generally do not require collateral from our clients.