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Pension Plans - Net Periodic Pension Cost (Detail) - Pension Plan - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Jan. 01, 2022 | Jan. 02, 2021
Net periodic benefit cost: |  |  |
Service cost | $ 26.5 | $ 28.8 | $ 27.0
Interest cost | 44.4 | 42.3 | 48.7
Expected return on plan assets | (99.2) | (94.4) | (94.7)
Amortization of unrecognized loss | 18.0 | 36.3 | 34.5
Amortization of prior service cost | 0.1 | 0.1 | 0.0
Net periodic benefit cost (credit) | (10.2) | 13.1 | 15.5
Changes in benefit obligations recognized in OCI, net of tax: |  |  |
Net (gain) loss | 59.6 | (92.8) | (31.6)
Prior service cost (credit) | (0.1) | (0.1) | 0.1
Total recognized in OCI | $ 59.5 | $ (92.9) | $ (31.5)

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