A formal written document detailing charges or expenses, often used in business or official contexts.
A statement of accounts arrived from the accounting department.
Please submit the expense report for the business trip.
明細書 is a detailed statement or specification, often itemized, but not necessarily for financial settlement; 精算書 specifically relates to financial accounts or expense settlement.
Compound of 精算 (せいさん, 'settlement of accounts') + 書 (しょ, 'document').