General (Narrative) (Details) - USD ($) $ in Millions	Mar. 29, 2019	Jan. 31, 2019	Jan. 01, 2019
Operating lease ROU assets	$ 946.7		$ 971.0
Total operating lease liabilities	986.1		$ 1,012.0
Net investment hedging
Derivative, notional amount	9,393.3
Net investment hedging | Foreign currency contracts
Derivative, notional amount	$ 1,875.0	$ 1,900.0