Debt (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2017

Dec. 31, 2016

Debt Disclosure [Abstract]

Long-term Debt

Long-term debt balances, including obligations for capital leases, and associated interest rates as of March 31, 2017, were as follows:

	March 31, 2017			December 31, 2016
	(in millions)
Senior notes due 2021	$	—		$	1,500
Senior notes with a rate of 4.250%, due 2024		1,000			1,000
Senior notes with a rate of 4.625%, due 2025		900			—
Senior notes with a rate of 4.875%, due 2027		600			—
Senior secured term loan facility due 2020		—			750
Senior secured term loan facility with a rate of 2.98%, due 2023		3,959			3,209
Capital lease obligations with an average rate of 6.34%, due 2021 to 2030		237			227
Other debt with an average rate of 2.65%, due 2018 to 2026		22			20
		6,718			6,706
Less: unamortized deferred financing costs and discount		(89	)		(90	)
Less: current maturities of long-term debt(1)		(41	)		(33	)
	$	6,588		$	6,583

⁽¹⁾  Net of unamortized deferred financing costs and discount attributable to current maturities of long-term debt.

Long-term debt balances, including obligations for capital leases, and associated interest rates as of December 31, 2016 were as follows:

	December 31,
	2016			2015
	(in millions)
Senior notes with a rate of 5.625%, due 2021	$	1,500		$	1,500
Senior notes with a rate of 4.250%, due 2024		1,000			—
Senior secured term loan facility with a rate of 3.50%, due 2020		750			4,225
Senior secured term loan facility with an average rate of 3.26%, due 2023		3,209			—
Capital lease obligations with an average rate of 6.34%, due 2018 to 2028		227			227
Other debt with an average rate of 2.65%, due 2018 to 2026		20			20
		6,706			5,972
Less: unamortized deferred financing costs and discount		(90	)		(78	)
Less: current maturities of long-term debt(1)		(33	)		(7	)
	$	6,583		$	5,887

⁽¹⁾  Net of unamortized deferred financing costs and discount attributable to current maturities of long-term debt.

Debt Maturities

The contractual maturities of our long-term debt as of March 31, 2017 were as follows:

Year	(in millions)
2017(remaining)	$	36
2018		59
2019		55
2020		56
2021		57
Thereafter		6,455
	$	6,718

The contractual maturities of our long-term debt as of December 31, 2016 were as follows:

Year	(in millions)
2017	$	40
2018		50
2019		47
2020		798
2021		1,549
Thereafter		4,222
	$	6,706