Share-Based Compensation	3 Months Ended
Jun. 30, 2026
Share-Based Payment Arrangement [Abstract]
7. SHARE-BASED COMPENSATION	7. SHARE-BASED COMPENSATION During the three months ended June 30, 2026, we did not grant any Hindalco phantom RSUs or Hindalco SARs. Total share-based compensation expense was $11 million for the three months ended June 30, 2026. Total share-based compensation expense was $2 million for the three months ended June 30, 2025. As of June 30, 2026, the outstanding liability related to share-based compensation was $37 million. The cash payments made to settle all Hindalco SAR liabilities were $4 million and $1 million in the three months ended June 30, 2026, and 2025, respectively. There were no cash payments made to settle RSUs in the first quarter of fiscal 2027. Total cash payments made to settle RSUs were $28 million in the three months ended June 30, 2025. As of June 30, 2026, unrecognized compensation expense related to the non-vested Hindalco SARs (assuming all future performance criteria are met) and the RSUs was $6 million and $9 million, respectively. The unrecognized expense related to the non-vested Hindalco SARs and the RSUs is expected to be recognized over weighted average periods of 1.3 years and 1.4 years, respectively.

Share-Based Compensation

3 Months Ended

Jun. 30, 2026

Share-Based Payment Arrangement [Abstract]

During the three months ended June 30, 2026, we did not grant any Hindalco phantom RSUs or Hindalco SARs. Total share-based compensation expense was $11 million for the three months ended June 30, 2026. Total share-based compensation expense was $2 million for the three months ended June 30, 2025. As of June 30, 2026, the outstanding liability related to share-based compensation was $37 million.

The cash payments made to settle all Hindalco SAR liabilities were $4 million and $1 million in the three months ended June 30, 2026, and 2025, respectively. There were no cash payments made to settle RSUs in the first quarter of fiscal 2027. Total cash payments made to settle RSUs were $28 million in the three months ended June 30, 2025. As of June 30, 2026, unrecognized compensation expense related to the non-vested Hindalco SARs (assuming all future performance criteria are met) and the RSUs was $6 million and $9 million, respectively. The unrecognized expense related to the non-vested Hindalco SARs and the RSUs is expected to be recognized over weighted average periods of 1.3 years and 1.4 years, respectively.