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Commitments and Contingencies (Tables)
3 Months Ended
Mar. 29, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Accrued Warranty Liability The following is a rollforward of our accrued warranty liability ($ in millions):
Balance, December 31, 2018
$
72.1

Accruals for warranties issued during the period
17.9

Settlements made
(23.0
)
Effect of foreign currency translation
0.2

Balance, March 29, 2019
$
67.2