Shareholders' Equity - Equity Stocks Information (Details) shares in Millions	Dec. 31, 2016 $ / shares shares
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	22
Preferred Stock, Par or Stated Value Per Share | $ / shares	$ 1.00
Common Stock, Shares Authorized	1,750
Common Stock, Par or Stated Value Per Share | $ / shares	$ 1.00
Stock Compensation Plan [Member]
Class of Stock [Line Items]
Common Stock Shares Reserved for Future Issuance, Incentive Compensation	101
Convertible Debt [Member]
Class of Stock [Line Items]
Common Stock Shares Reserved for Future Issuance, Incentive Compensation	48
Series A [Member]
Class of Stock [Line Items]
Common Stock Shares Reserved for Future Issuance, Incentive Compensation	27