Financial Reporting Problem: The Procter & Gamble Company $($P&G$)$

The financial statements of P&G are presented in Appendix B$.$ The company's complete annual report, including the notes to the financial statements, is available online.

Instructions

Refer to P&G$\text{'}$s financial statements and the accompanying notes to answer the following questions.

Were there changes in accounting principles reported by P&G during the three years covered by its income statements $(2018-2020)?$ If so$,$ describe the nature of the change and the year of change.

What types of estimates did P&G discuss in $2020?$