2.2.0.7 false Long -Term Debt (Policies) 0404 - Disclosure - Long -Term Debt (Policies) true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Long - Term Debt (Policies) [Abstract] 0 life_LongTermDebtPoliciesAbstract life false na duration Long Term Debt Policies Abstract. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string Long Term Debt Policies Abstract. false 3 Adoption of ASC Topic 470-20 and its impact 1 life_AdoptionOfAscTopic47020AndItsImpactTextBlock life false na duration Adoption of ASC Topic 470-20 and its impact. false false false false false false false false false false false verboselabel false 1 false false false false 0 0   <div style="font-family: 'Times New Roman',Times,serif"> <div align="left" style="font-size: 10pt; margin-top: 6pt">     Effective January 1, 2009, The Company adopted a bifurcation requirement prescribed by <i>ASC Topic 470-20, Debt with Conversion and Other Options, </i>with the retrospective application for our outstanding $1,150.0 million of Convertible Senior Notes, which consisted of $350.0 million related to the 2% Convertible Senior Note (2023 Note), $450.0 million related to the 1 1/2% Convertible Senior Note (2024 Note) and $350.0 million related to the 3 1/4% Convertible Senior Note (2025 Note). Upon adoption of the provision, the Company retroactively recognized the carrying amount of $100.0 million, $129.8 million, and $47.6 million for the equity components of the 2023, 2024 and 2025 Notes, respectively, with deferred tax impacts of $39.1 million, $50.7 million and $18.6 million for the 2023, 2024 and 2025 Notes, respectively, and a liability component classified in long-term debt of $250.0 million, $320.2 million and $302.4 million for the 2023, 2024 and 2025 Notes, respectively. The terms of the 2023 Notes, 2024 Notes, and 2025 Notes require the Company to settle the par value of such notes in cash and deliver shares only for the excess, if any, of the notes’ conversion value based on conversion prices of $34.12, $51.02, and $49.13 per share, respectively, over their par values. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     In conjunction with the adoption of the provision, the Company applied the guidance to the Company’s debt issuance costs. As a result, the Company allocated the underlying issuance costs associated with the Convertible Senior Notes to equity in the same ratio as when determining the appropriate debt discount. The Company allocated $6.9 million to equity with a deferred tax impact of $2.7 million, and reduced the amount of the debt issuance costs by $6.9 million. </div> </div>  <!-- Begin Block Tagged false false false us-types:textBlockItemType textblock Adoption of ASC Topic 470-20 and its impact. No authoritative reference available. false 1 2 false UnKnown UnKnown UnKnown false true