Debt	6 Months Ended
Debt	Dec. 31, 2021
Debt Disclosure [Abstract]
Debt	During the six months ended January 1, 2021, $9 million aggregate principal amount of the 2022 Notes were repurchased for cash at a premium to their principal amount, plus accrued and unpaid interest. 2023 Notes. During the six months ended January 1, 2021, $5 million aggregate principal amount of the 2023 Notes were repurchased for cash at a premium to their principal amount, plus accrued and unpaid interest. The Company recorded a loss of $1 million on repurchases during the six months ended January 1, 2021, which is included in Other, net in the Company’s Condensed Consolidated Statements of Operations. Credit Agreement The Company’s subsidiary, Seagate HDD Cayman, entered into a credit agreement on February 20, 2019, which was amended on September 16, 2019, January 13, 2021, May 18, 2021 and October 14, 2021 (the “Credit Agreement”). Prior to the October 14, 2021 amendment, the Credit Agreement provided a term loan facility in an aggregate principal amount of $500 million and a $1.725 billion senior unsecured revolving credit facility (“Revolving Credit Facility”). The September 2019 Term Loan had a final maturity date of September 16, 2025 and the Revolving Credit Facility had a final maturity of February 20, 2024. On September 17, 2019, Seagate HDD Cayman borrowed the $500 million principal amount under the September 2019 Term Loan. On October 14, 2021, STX and Seagate HDD Cayman entered into an amendment to the Credit Agreement (“Fifth Amendment”), which provides for a new term loan facility in the aggregate principal amount of $1.2 billion that was extended in two tranches of $600 million each (“Term Loan A1” and “Term Loan A2” and together the “Term Loans”). Term Loan A1 and Term Loan A2 were each drawn in full on the closing date for the Fifth Amendment. The proceeds of the Term Loans may be used for general corporate purposes, to refinance or repay the September 2019 Term Loan and to refinance or repay the 2022 Notes. Term Loan A1 bears interest at a rate of LIBOR plus a variable margin ranging from 1.125% to 2.375% that will be determined based on the corporate credit rating of the Company. Term Loan A1 is repayable in quarterly installments beginning on December 31, 2022 and has a final maturity date of September 16, 2025. Term Loan A2 bears interest at a rate of LIBOR plus a variable margin ranging from 1.25% to 2.5% that will be determined based on the corporate credit rating of the Company. Term Loan A2 is repayable in quarterly installments beginning on December 31, 2022 and has a final maturity date of July 30, 2027. On October 14, 2021, Seagate HDD Cayman utilized part of the proceeds of Term Loan A1 to fully repay the $475 million principal amount outstanding of the September 2019 Term Loan. In addition, pursuant to the Fifth Amendment, the maturity date for the revolving loan commitments under the Revolving Credit Facility was extended until October 14, 2026, the revolving commitments were increased to $1.75 billion and the interest rate margins for the revolving loans were amended to LIBOR plus a variable margin ranging from 1.125% to 2.375% that will be determined based on the corporate credit rating of the Company. STX and certain of its material subsidiaries, including STUC, fully and unconditionally guarantee both the Revolving Credit Facility and the Term Loans. The Credit Agreement includes three financial covenants: (1) interest coverage ratio, (2) total leverage ratio and (3) a minimum liquidity amount. The Company was in compliance with the covenants as of December 31, 2021 and expects to be in compliance for the next 12 months. As of December 31, 2021, no borrowings (including swingline loans) were outstanding and no commitments were utilized for letters of credit issued under the Revolving Credit Facility.