Class of Stock [Domain] Class of Stock [Domain] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code 4.125% Senior Notes due 2029 4.125% Senior Notes Due 2029 [Member] 4.125% Senior Notes Due 2029 Class of Stock [Axis] Class of Stock [Axis] Security Exchange Name Security Exchange Name Cover Page [Line Items] Cover Page [Line Items] Cover Page Entity Address, City or Town Entity Address, City or Town Soliciting Material Soliciting Material City Area Code City Area Code Common Stock , $1.00 par value Common Stock [Member] Amendment Flag Amendment Flag Entity Tax Identification Number Entity Tax Identification Number Cover Page [Abstract] Cover Page [Abstract] Cover Page [Abstract] Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Pre-commencement Tender Offer Pre-commencement Tender Offer Entity Emerging Growth Company Entity Emerging Growth Company Cover Page [Table] Cover Page [Table] Cover Page Entity Central Index Key Entity Central Index Key Entity File Number Entity File Number Entity Address, State or Province Entity Address, State or Province Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Entity Address, Address Line One Entity Address, Address Line One Entity Address, Postal Zip Code Entity Address, Postal Zip Code Written Communications Written Communications Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Document Period End Date Document Period End Date Document Type Document Type