Stock Transactions And Stock-Based Compensation (Narrative) (Details) $ / shares in Units, $ in Millions				1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 02, 2020 USD ($) shares	Dec. 31, 2019 shares	Mar. 01, 2019 USD ($) $ / shares shares	May 31, 2020 USD ($) $ / shares shares	Oct. 02, 2020 USD ($) shares	Sep. 27, 2019 shares	Oct. 02, 2020 USD ($) shares	Sep. 27, 2019 USD ($) shares	Jul. 16, 2013 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares to be repurchased | shares									20,000,000
Remaining number of shares authorized to be repurchased | shares	20,000,000				20,000,000		20,000,000
Common stock, proceeds from issuance | $							$ 1,728.5	$ 1,443.2
Preferred stock, proceeds from the issuance | $							$ 1,668.1	$ 1,599.6
Common shares reserved for issuance under the 2007 Omnibus Incentive Plan, shares | shares	54,000,000				54,000,000		54,000,000
RSU/PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost | $	$ 195.0				$ 195.0		$ 195.0
Weighted average period for cost to be recognized	2 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost | $	$ 183.0				$ 183.0		$ 183.0
Weighted average period for cost to be recognized	3 years
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of stock | shares				10,900,000
Common stock issued, price per share | $ / shares				$ 163.00
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of stock | shares			12,100,000		0	0	10,900,000	12,100,000
Common stock issued, price per share | $ / shares			$ 123.00
Common stock, proceeds from issuance | $			$ 1,400.0	$ 1,730.0
Payments of stock issuance costs | $			$ 45.0	54.0
Threshold consecutive trading days			20
Conversion of Stock, Shares Issued | shares					59
Preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of stock | shares					0	0	1,700,000	1,700,000
Preferred stock | Preferred stock series B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments of stock issuance costs | $				$ 49.0
Preferred stock, shares issued | shares	1,720,000	1,720,000		1,720,000	1,720,000		1,720,000
Preferred stock, dividend rate, percent	5.00%	5.00%		5.00%
Preferred stock, liquidation preference per share | $ / shares				$ 1,000
Preferred stock, proceeds from the issuance | $				$ 1,670.0
Preferred stock | Preferred stock series A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments of stock issuance costs | $			$ 50.0
Preferred stock, shares issued | shares	1,650,000	1,650,000	1,650,000		1,650,000		1,650,000
Preferred stock, dividend rate, percent	4.75%	4.75%	4.75%
Preferred stock, liquidation preference per share | $ / shares			$ 1,000
Preferred stock, proceeds from the issuance | $			$ 1,600.0
Conversion of Stock, Shares Converted | shares					9