Common Stock Common Stock [Member] Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line Two Entity Address, Address Line Two Entity File Number Entity File Number Cover [Abstract] Title of 12(b) Security Title of 12(b) Security 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 Senior Notes Senior Notes [Member] Five point two five percent senior notes due two thousand thirty three Five point two five percent senior notes due two thousand thirty three [Member] Five point two five percent senior notes due two thousand thirty three Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Written Communications Written Communications Trading Symbol Trading Symbol City Area Code City Area Code Five point one zero percent senior notes due two thousand thirty four Five point one zero percent senior notes due two thousand thirty four [Member] Five point one zero percent senior notes due two thousand thirty four Document Information [Table] Document Information [Table] No Trading Symbol Flag No Trading Symbol Flag 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 Document [Domain] Document [Domain] Entity Address, Country Entity Address, Country Security Exchange Name Security Exchange Name Document Information, Document [Axis] Document Information, Document [Axis] Document Information [Line Items] Document Information [Line Items] Document Type Document Type Class of Stock [Axis] Class of Stock [Axis] Pre-commencement Tender Offer Pre-commencement Tender Offer Entity Central Index Key Entity Central Index Key Entity Emerging Growth Company Entity Emerging Growth Company