Long-term Debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Summary of Long-term Debt

The following table provides a summary of the Company's outstanding long-term debt and the fair values based on quoted market prices in less active markets as of June 30, 2018 and December 31, 2017:

						Level 2 Fair Value as of
	Principal Amount at Par		Issuance Date	Maturity	Interest Payment Dates	June 30, 2018		December 31, 2017
	(in millions)					(in millions)
5.375% Senior Notes	$	500	February 2013	February 2021	February 1 and August 1	$	516	$	530
5.750% Senior Notes	400		February 2014	March 2024	March 1 and September 1	411		427
5.875% Senior Notes	800		February 2015	February 2025	April 15 and October 15	822		856
5.50% Senior Notes	700		February 2015	February 2022	April 15 and October 15	723		739
4.375% Senior Notes	1,000		October 2016	November 2026	May 15 and November 15	942		983
3.625% Senior Notes (1)	1,517		May 2017	May 2027	May 15 and November 15	1,491		1,575
4.875% Senior Notes	1,600		October 2017	April 2028	April 15 and October 15	1,526		1,571
5.875% Senior Notes	$	1,900	April 2018	November 2028	May 15 and November 15	1,923		—
	$	8,417

(1) Debt is denominated in euro with a €1,300 million aggregate principal amount and is remeasured into U.S. dollars at each balance sheet date.

Schedule of Maturities of Long-term Debt

The expected timing of principal and interest payments for these Notes are as follows:

	As of
	June 30, 2018		December 31, 2017
	(in thousands)
Less than one year	$	429,942	$	311,339
Due after one year and through three years	1,347,480		627,444
Due after three years and through five years	1,448,814		1,761,465
Due after five years	8,687,586		6,348,580
Total debt obligations	$	11,913,822	$	9,048,828