Common Stock ($0.50 par value) Common Stock [Member] Entity Tax Identification Number Entity Tax Identification Number 3.700% Notes due 2044 3.700% Notes due 2044 [Member] 3.700% Notes due 2044 Entity File Number Entity File Number 3.500% Notes due 2037 3.500% Notes due 2037 [Member] 3.500% Notes due 2037 Cover [Abstract] Title of 12(b) Security Title of 12(b) Security 3.250% Notes due 2032 3.250% Notes due 2032 [Member] 3.250% Notes due 2032 Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Soliciting Material Soliciting Material Entity Address, Address Line One Entity Address, Address Line One Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Entity Address, State or Province Entity Address, State or Province Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Written Communications Written Communications Trading Symbol Trading Symbol 3.750% Notes due 2054 3.750% Notes due 2054 [Member] 3.750% Notes due 2054 City Area Code City Area Code Document Information [Table] Document Information [Table] Document Period End Date Document Period End Date Amendment Flag Amendment Flag Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Entity Address, City or Town Entity Address, City or Town Security Exchange Name Security Exchange Name Document Information [Line Items] Document Information [Line Items] Document Type Document Type Class of Stock [Axis] Class of Stock [Axis] 1.375% Notes due 2036 1.375% Notes due 2036 [Member] 1.375% Notes due 2036 [Member] Pre-commencement Tender Offer Pre-commencement Tender Offer 2.500% Notes due 2034 2.500% Notes due 2034 [Member] 2.500% Notes due 2034 [Member] Entity Central Index Key Entity Central Index Key Entity Emerging Growth Company Entity Emerging Growth Company