Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Unaudited Interim Financial Information	The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) for interim financial reporting. The significant accounting policies followed by the Company for interim financial reporting are consistent with the accounting policies it follows for annual financial reporting and are disclosed in Note 1, “Basis of Presentation and Summary of Significant Accounting Policies,” of the Company’s audited consolidated financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2020 (the “2020 Form 10-K”). There have been no significant changes to the Company’s significant accounting policies during the first three months of 2021.
Use of Estimates	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company monitors estimates and assumptions on a continuous basis and updates these estimates and assumptions as facts and circumstances change and new information is obtained, including facts and circumstances related to the novel coronavirus disease (“COVID-19”) pandemic. Actual results could differ from those estimates and assumptions due to, among other things, the impacts caused by the COVID-19 pandemic.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging ActivitiesThe Company had variable rate borrowings under its 2015 Term Loan and now has variable rate borrowings under its New Term Loan, and as a result, was and is exposed to interest rate fluctuations on these borrowings. From time to time, the Company enters into interest rate swaps to mitigate the risk in fluctuations in interest rates. For hedges that qualify, the Company accounts for these interest rate swaps as qualifying cash flow hedges because their purpose is to hedge the Company’s exposure to increases in interest rates on its variable rate borrowings and as the interest rate swaps effectively convert variable rate borrowings to fixed rate borrowings based on the fixed interest rate for the interest rate swaps plus the applicable margin on the 2015 Term Loan or New Term Loan, as applicable. For those designated interest rate swaps accounted for as cash flow hedges, the Company recognizes in accumulated other comprehensive loss (“AOCL”) or accumulated other comprehensive income (“AOCI”), net of tax, any changes in the fair value, representing unrealized gains or losses, of its interest rate swaps. The Company assesses effectiveness at inception and on an ongoing quarterly basis. The Company may also enter into interest rate swap agreements that are not designated as cash flow hedges for accounting purposes. Changes in the fair value of interest rate swaps not designated as cash flow hedges are reported in the statements of operations as part of other income, net. The Company does not use derivative financial instruments for speculative or trading purposes and does not offset the fair value amounts of its derivatives. Current market conditions, including dislocation in the financial markets and volatility in interest rates, may affect the performance of the Company’s hedging relationships for cash flow hedges, which could cause the hedges to no longer be effective.
Commitments and Contingencies	Commitments and ContingenciesThe Company records liabilities for pending and threatened litigation matters when an adverse outcome is probable and the amount of the potential liability can be reasonably estimated. The Company reviews claims and legal proceedings on a continuous basis and records or adjusts liabilities recorded for such matters based on updated facts and circumstances including settlements or offers to settle, judicial rulings, advice of counsel or other information pertinent to a particular matter. Legal costs associated with contingencies are charged to expense as incurred.
Fair Value Measurements	Fair Value Measurements The Company records certain assets and liabilities at fair value on a recurring and nonrecurring basis. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability, or the exit price, in an orderly transaction between market participants at the measurement date. U.S. GAAP establishes a fair value hierarchy that gives highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities and the lowest level to unobservable inputs. The inputs used to measure fair value are classified into the following fair value hierarchy: •Level 1 - Quoted prices (unadjusted) for identical assets or liabilities in active markets that the Company can access at the measurement date. •Level 2 - Observable inputs other than quoted prices in Level 1, including (i) quoted prices for similar assets and liabilities in active markets, (ii) quoted prices for identical or similar assets or liabilities in markets that are not active and (iii) observable inputs for the assets or liabilities other than quoted market prices. •Level 3 - Unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities. This includes assets and liabilities determined using pricing models, discounted cash flow methodologies or similar techniques reflecting the Company’s own assumptions.

PPD, Inc. 10-Q