Shareholders' Equity (Details) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Common stock par value (in dollars per share)	$ 1.00	$ 1.00
Common Stock
Class of Stock [Line Items]
Common Shares Authorized (in shares)	1,800,000,000
Common Shares Issued (in shares)	818,000,000
Common Shares Outstanding (in shares)	818,000,000
Preferred Stock
Class of Stock [Line Items]
Preferred Shares Authorized (in shares)	25,000,000
Preferred Shares Issued (in shares)	0
Preferred Shares Outstanding (in shares)	0