Consolidated Balance Sheets (Parenthetical) $ in Millions	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2016 € / shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2015 € / shares	Jun. 27, 2015 USD ($) $ / shares shares	Jun. 27, 2015 € / shares	Jun. 28, 2014 USD ($) $ / shares shares	Jun. 28, 2014 € / shares
Allowance for doubtful accounts | $	$ 6.3		$ 4.5		$ 2.6		$ 2.7
Commitments and Contingencies | $
Shareholders’ equity
Preferred shares, par value (in dollars per share) | $ / shares	$ 0.0001		$ 0.0001		$ 0.0001		$ 0.0001
Preferred shares, authorized (in shares) | shares	10,000,000		10,000,000		10,000,000		10,000,000
Ordinary shares, par value (in dollars per share) | € / shares		€ 0.001		€ 0.001		€ 0.001		€ 0.001
Ordinary shares, authorized (in shares) | shares	10,000,000,000		10,000,000,000		10,000,000,000		10,000,000,000