Equity and Accumulated Other Comprehensive Loss, Net (Equity Distribution Agreement Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions			6 Months Ended
	Jul. 01, 2020	Jan. 04, 2019	Jun. 30, 2020	Jun. 30, 2019	May 11, 2020
2019 Equity distribution agreement
Class of Stock [Line Items]
Proceeds from Issuance of Common Stock			$ 645.7
Sale of Stock, Price Per Share			$ 142.39
Payments of Stock Issuance Costs			$ 6.5
Common stock issued in public offering (shares)			4.6	0
Net proceeds		$ 652.2
2019 Equity distribution agreement | Subsequent Event
Class of Stock [Line Items]
Common stock issued in public offering (shares)	1,600,000
Net proceeds	$ 247.2
Issuance of common stock, net of offering costs (shares)	1,600,000
Average share price	$ 160.10
Commission fees to sales agent	$ 2.5
Shares reserved for future issuance	750,300,000
2020 Equity distribution agreement
Class of Stock [Line Items]
Aggregate offering price of the distribution agreement maximum					$ 1,000.0
Maximum | 2020 Equity distribution agreement
Class of Stock [Line Items]
Aggregate offering price of the distribution agreement maximum					$ 1,000.0